mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 15:37:23 +00:00
54841ab50c
The hush shell dynamically allocates (and re-allocates) memory for the
argument strings in the "char *argv[]" argument vector passed to
commands. Any code that modifies these pointers will cause serious
corruption of the malloc data structures and crash U-Boot, so make
sure the compiler can check that no such modifications are being done
by changing the code into "char * const argv[]".
This modification is the result of debugging a strange crash caused
after adding a new command, which used the following argument
processing code which has been working perfectly fine in all Unix
systems since version 6 - but not so in U-Boot:
int main (int argc, char **argv)
{
while (--argc > 0 && **++argv == '-') {
/* ====> */ while (*++*argv) {
switch (**argv) {
case 'd':
debug++;
break;
...
default:
usage ();
}
}
}
...
}
The line marked "====>" will corrupt the malloc data structures and
usually cause U-Boot to crash when the next command gets executed by
the shell. With the modification, the compiler will prevent this with
an
error: increment of read-only location '*argv'
N.B.: The code above can be trivially rewritten like this:
while (--argc > 0 && **++argv == '-') {
char *arg = *argv;
while (*++arg) {
switch (*arg) {
...
Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>
1418 lines
33 KiB
C
1418 lines
33 KiB
C
/*
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* (C) Copyright 2003
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* Martin Krause, TQ-Systems GmbH, martin.krause@tqs.de
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#define DEBUG
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#include <common.h>
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#include <exports.h>
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#include <timestamp.h>
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#include <asm/arch/s3c24x0_cpu.h>
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#include "tsc2000.h"
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#include "rs485.h"
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/*
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* define, to wait for the touch to be pressed, before reading coordinates in
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* command do_touch. If not defined, an error message is printed, when the
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* command do_touch is invoked and the touch is not pressed within an specific
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* interval.
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*/
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#undef CONFIG_TOUCH_WAIT_PRESSED
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/* max time to wait for touch is pressed */
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#ifndef CONFIG_TOUCH_WAIT_PRESSED
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#define TOUCH_TIMEOUT 5
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#endif /* !CONFIG_TOUCH_WAIT_PRESSED */
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/* assignment of CPU internal ADC channels with TRAB hardware */
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#define VCC5V 2
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#define VCC12V 3
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/* CPLD-Register for controlling TRAB hardware functions */
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#define CPLD_BUTTONS ((volatile unsigned long *)0x04020000)
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#define CPLD_FILL_LEVEL ((volatile unsigned long *)0x04008000)
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#define CPLD_ROTARY_SWITCH ((volatile unsigned long *)0x04018000)
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#define CPLD_RS485_RE ((volatile unsigned long *)0x04028000)
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/* timer configuration bits for buzzer and PWM */
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#define START2 (1 << 12)
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#define UPDATE2 (1 << 13)
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#define INVERT2 (1 << 14)
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#define RELOAD2 (1 << 15)
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#define START3 (1 << 16)
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#define UPDATE3 (1 << 17)
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#define INVERT3 (1 << 18)
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#define RELOAD3 (1 << 19)
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#define PCLK 66000000
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#define BUZZER_FREQ 1000 /* frequency in Hz */
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#define PWM_FREQ 500
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/* definitions of I2C EEPROM device address */
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#define I2C_EEPROM_DEV_ADDR 0x54
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/* definition for touch panel calibration points */
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#define CALIB_TL 0 /* calibration point in (T)op (L)eft corner */
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#define CALIB_DR 1 /* calibration point in (D)own (R)ight corner */
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/* EEPROM address map */
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#define SERIAL_NUMBER 8
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#define TOUCH_X0 52
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#define TOUCH_Y0 54
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#define TOUCH_X1 56
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#define TOUCH_Y1 58
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#define CRC16 60
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/* EEPROM stuff */
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#define EEPROM_MAX_CRC_BUF 64
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/* RS485 stuff */
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#define RS485_MAX_RECEIVE_BUF_LEN 100
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/* Bit definitions for ADCCON */
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#define ADC_ENABLE_START 0x1
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#define ADC_READ_START 0x2
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#define ADC_STDBM 0x4
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#define ADC_INP_AIN0 (0x0 << 3)
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#define ADC_INP_AIN1 (0x1 << 3)
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#define ADC_INP_AIN2 (0x2 << 3)
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#define ADC_INP_AIN3 (0x3 << 3)
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#define ADC_INP_AIN4 (0x4 << 3)
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#define ADC_INP_AIN5 (0x5 << 3)
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#define ADC_INP_AIN6 (0x6 << 3)
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#define ADC_INP_AIN7 (0x7 << 3)
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#define ADC_PRSCEN 0x4000
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#define ADC_ECFLG 0x8000
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/* function test functions */
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int do_dip (void);
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int do_info (void);
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int do_vcc5v (void);
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int do_vcc12v (void);
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int do_buttons (void);
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int do_fill_level (void);
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int do_rotary_switch (void);
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int do_pressure (void);
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int do_v_bat (void);
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int do_vfd_id (void);
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int do_buzzer (char * const *);
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int do_led (char * const *);
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int do_full_bridge (char * const *);
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int do_dac (char * const *);
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int do_motor_contact (void);
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int do_motor (char * const *);
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int do_pwm (char * const *);
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int do_thermo (char * const *);
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int do_touch (char * const *);
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int do_rs485 (char * const *);
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int do_serial_number (char * const *);
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int do_crc16 (void);
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int do_power_switch (void);
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int do_gain (char * const *);
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int do_eeprom (char * const *);
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/* helper functions */
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static void adc_init (void);
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static int adc_read (unsigned int channel);
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static void print_identifier (void);
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#ifdef CONFIG_TOUCH_WAIT_PRESSED
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static void touch_wait_pressed (void);
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#else
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static int touch_check_pressed (void);
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#endif /* CONFIG_TOUCH_WAIT_PRESSED */
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static void touch_read_x_y (int *x, int *y);
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static int touch_write_clibration_values (int calib_point, int x, int y);
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static int rs485_send_line (const char *data);
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static int rs485_receive_chars (char *data, int timeout);
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static unsigned short updcrc(unsigned short icrc, unsigned char *icp,
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unsigned int icnt);
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#if defined(CONFIG_CMD_I2C)
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static int trab_eeprom_read (char * const *argv);
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static int trab_eeprom_write (char * const *argv);
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int i2c_write_multiple (uchar chip, uint addr, int alen, uchar *buffer,
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int len);
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int i2c_read_multiple ( uchar chip, uint addr, int alen, uchar *buffer,
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int len);
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#endif
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/*
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* TRAB board specific commands. Especially commands for burn-in and function
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* test.
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*/
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int trab_fkt (int argc, char * const argv[])
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{
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int i;
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app_startup(argv);
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if (get_version () != XF_VERSION) {
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printf ("Wrong XF_VERSION. Please re-compile with actual "
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"u-boot sources\n");
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printf ("Example expects ABI version %d\n", XF_VERSION);
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printf ("Actual U-Boot ABI version %d\n", (int)get_version());
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return 1;
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}
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debug ("argc = %d\n", argc);
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for (i=0; i<=argc; ++i) {
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debug ("argv[%d] = \"%s\"\n", i, argv[i] ? argv[i] : "<NULL>");
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}
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adc_init ();
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switch (argc) {
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case 0:
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case 1:
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break;
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case 2:
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if (strcmp (argv[1], "info") == 0) {
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return (do_info ());
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}
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if (strcmp (argv[1], "dip") == 0) {
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return (do_dip ());
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}
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if (strcmp (argv[1], "vcc5v") == 0) {
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return (do_vcc5v ());
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}
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if (strcmp (argv[1], "vcc12v") == 0) {
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return (do_vcc12v ());
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}
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if (strcmp (argv[1], "buttons") == 0) {
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return (do_buttons ());
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}
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if (strcmp (argv[1], "fill_level") == 0) {
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return (do_fill_level ());
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}
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if (strcmp (argv[1], "rotary_switch") == 0) {
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return (do_rotary_switch ());
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}
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if (strcmp (argv[1], "pressure") == 0) {
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return (do_pressure ());
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}
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if (strcmp (argv[1], "v_bat") == 0) {
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return (do_v_bat ());
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}
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if (strcmp (argv[1], "vfd_id") == 0) {
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return (do_vfd_id ());
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}
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if (strcmp (argv[1], "motor_contact") == 0) {
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return (do_motor_contact ());
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}
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if (strcmp (argv[1], "crc16") == 0) {
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return (do_crc16 ());
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}
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if (strcmp (argv[1], "power_switch") == 0) {
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return (do_power_switch ());
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}
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break;
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case 3:
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if (strcmp (argv[1], "full_bridge") == 0) {
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return (do_full_bridge (argv));
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}
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if (strcmp (argv[1], "dac") == 0) {
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return (do_dac (argv));
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}
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if (strcmp (argv[1], "motor") == 0) {
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return (do_motor (argv));
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}
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if (strcmp (argv[1], "pwm") == 0) {
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return (do_pwm (argv));
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}
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if (strcmp (argv[1], "thermo") == 0) {
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return (do_thermo (argv));
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}
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if (strcmp (argv[1], "touch") == 0) {
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return (do_touch (argv));
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}
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if (strcmp (argv[1], "serial_number") == 0) {
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return (do_serial_number (argv));
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}
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if (strcmp (argv[1], "buzzer") == 0) {
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return (do_buzzer (argv));
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}
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if (strcmp (argv[1], "gain") == 0) {
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return (do_gain (argv));
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}
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break;
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case 4:
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if (strcmp (argv[1], "led") == 0) {
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return (do_led (argv));
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}
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if (strcmp (argv[1], "rs485") == 0) {
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return (do_rs485 (argv));
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}
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if (strcmp (argv[1], "serial_number") == 0) {
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return (do_serial_number (argv));
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}
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break;
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case 5:
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if (strcmp (argv[1], "eeprom") == 0) {
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return (do_eeprom (argv));
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}
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break;
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case 6:
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if (strcmp (argv[1], "eeprom") == 0) {
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return (do_eeprom (argv));
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}
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break;
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default:
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break;
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}
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printf ("Usage:\n<command> <parameter1> <parameter2> ...\n");
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return 1;
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}
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void hang (void)
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{
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puts ("### ERROR ### Please RESET the board ###\n");
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for (;;);
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}
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int do_info (void)
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{
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printf ("Stand-alone application for TRAB board function test\n");
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printf ("Built: %s at %s\n", U_BOOT_DATE, U_BOOT_TIME);
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return 0;
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}
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int do_dip (void)
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{
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unsigned int result = 0;
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int adc_val;
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int i;
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/***********************************************************
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DIP switch connection (according to wa4-cpu.sp.301.pdf, page 3):
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SW1 - AIN4
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SW2 - AIN5
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SW3 - AIN6
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SW4 - AIN7
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"On" DIP switch position short-circuits the voltage from
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the input channel (i.e. '0' conversion result means "on").
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*************************************************************/
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for (i = 7; i > 3; i--) {
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if ((adc_val = adc_read (i)) == -1) {
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printf ("Channel %d could not be read\n", i);
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return 1;
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}
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/*
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* Input voltage (switch open) is 1.8 V.
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* (Vin_High/VRef)*adc_res = (1,8V/2,5V)*1023) = 736
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* Set trigger at halve that value.
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*/
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if (adc_val < 368)
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result |= (1 << (i-4));
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}
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/* print result to console */
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print_identifier ();
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for (i = 0; i < 4; i++) {
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if ((result & (1 << i)) == 0)
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printf("0");
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else
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printf("1");
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}
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printf("\n");
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return 0;
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}
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int do_vcc5v (void)
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{
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int result;
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/* VCC5V is connected to channel 2 */
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if ((result = adc_read (VCC5V)) == -1) {
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printf ("VCC5V could not be read\n");
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return 1;
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}
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/*
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* Calculate voltage value. Split in two parts because there is no
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* floating point support. VCC5V is connected over an resistor divider:
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* VCC5V=ADCval*2,5V/1023*(10K+30K)/10K.
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*/
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print_identifier ();
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printf ("%d", (result & 0x3FF)* 10 / 1023);
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printf (".%d", ((result & 0x3FF)* 10 % 1023)* 10 / 1023);
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printf ("%d V\n", (((result & 0x3FF) * 10 % 1023 ) * 10 % 1023)
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* 10 / 1024);
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return 0;
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}
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int do_vcc12v (void)
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{
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int result;
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if ((result = adc_read (VCC12V)) == -1) {
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printf ("VCC12V could not be read\n");
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return 1;
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}
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/*
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* Calculate voltage value. Split in two parts because there is no
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* floating point support. VCC5V is connected over an resistor divider:
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* VCC12V=ADCval*2,5V/1023*(30K+270K)/30K.
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*/
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print_identifier ();
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printf ("%d", (result & 0x3FF)* 25 / 1023);
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printf (".%d V\n", ((result & 0x3FF)* 25 % 1023) * 10 / 1023);
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return 0;
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}
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static int adc_read (unsigned int channel)
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{
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int j = 1000; /* timeout value for wait loop in us */
|
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int result;
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struct s3c2400_adc *padc;
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padc = s3c2400_get_base_adc();
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channel &= 0x7;
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padc->ADCCON &= ~ADC_STDBM; /* select normal mode */
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padc->ADCCON &= ~(0x7 << 3); /* clear the channel bits */
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padc->ADCCON |= ((channel << 3) | ADC_ENABLE_START);
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while (j--) {
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if ((padc->ADCCON & ADC_ENABLE_START) == 0)
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break;
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udelay (1);
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}
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if (j == 0) {
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printf("%s: ADC timeout\n", __FUNCTION__);
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padc->ADCCON |= ADC_STDBM; /* select standby mode */
|
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return -1;
|
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}
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|
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result = padc->ADCDAT & 0x3FF;
|
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|
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padc->ADCCON |= ADC_STDBM; /* select standby mode */
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debug ("%s: channel %d, result[DIGIT]=%d\n", __FUNCTION__,
|
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(padc->ADCCON >> 3) & 0x7, result);
|
|
|
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/*
|
|
* Wait for ADC to be ready for next conversion. This delay value was
|
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* estimated, because the datasheet does not specify a value.
|
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*/
|
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udelay (1000);
|
|
|
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return (result);
|
|
}
|
|
|
|
|
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static void adc_init (void)
|
|
{
|
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struct s3c2400_adc *padc;
|
|
|
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padc = s3c2400_get_base_adc();
|
|
|
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padc->ADCCON &= ~(0xff << 6); /* clear prescaler bits */
|
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padc->ADCCON |= ((65 << 6) | ADC_PRSCEN); /* set prescaler */
|
|
|
|
/*
|
|
* Wait some time to avoid problem with very first call of
|
|
* adc_read(). Without * this delay, sometimes the first read adc
|
|
* value is 0. Perhaps because the * adjustment of prescaler takes
|
|
* some clock cycles?
|
|
*/
|
|
udelay (1000);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
int do_buttons (void)
|
|
{
|
|
int result;
|
|
int i;
|
|
|
|
result = *CPLD_BUTTONS; /* read CPLD */
|
|
debug ("%s: cpld_taster (32 bit) %#x\n", __FUNCTION__, result);
|
|
|
|
/* print result to console */
|
|
print_identifier ();
|
|
for (i = 16; i <= 19; i++) {
|
|
if ((result & (1 << i)) == 0)
|
|
printf("0");
|
|
else
|
|
printf("1");
|
|
}
|
|
printf("\n");
|
|
return 0;
|
|
}
|
|
|
|
|
|
int do_power_switch (void)
|
|
{
|
|
int result;
|
|
|
|
struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
|
|
|
|
/* configure GPE7 as input */
|
|
gpio->PECON &= ~(0x3 << (2 * 7));
|
|
|
|
/* signal GPE7 from power switch is low active: 0=on , 1=off */
|
|
result = ((gpio->PEDAT & (1 << 7)) == (1 << 7)) ? 0 : 1;
|
|
|
|
print_identifier ();
|
|
printf("%d\n", result);
|
|
return 0;
|
|
}
|
|
|
|
|
|
int do_fill_level (void)
|
|
{
|
|
int result;
|
|
|
|
result = *CPLD_FILL_LEVEL; /* read CPLD */
|
|
debug ("%s: cpld_fuellstand (32 bit) %#x\n", __FUNCTION__, result);
|
|
|
|
/* print result to console */
|
|
print_identifier ();
|
|
if ((result & (1 << 16)) == 0)
|
|
printf("0\n");
|
|
else
|
|
printf("1\n");
|
|
return 0;
|
|
}
|
|
|
|
|
|
int do_rotary_switch (void)
|
|
{
|
|
int result;
|
|
/*
|
|
* Please note, that the default values of the direction bits are
|
|
* undefined after reset. So it is a good idea, to make first a dummy
|
|
* call to this function, to clear the direction bits and set so to
|
|
* proper values.
|
|
*/
|
|
|
|
result = *CPLD_ROTARY_SWITCH; /* read CPLD */
|
|
debug ("%s: cpld_inc (32 bit) %#x\n", __FUNCTION__, result);
|
|
|
|
*CPLD_ROTARY_SWITCH |= (3 << 16); /* clear direction bits in CPLD */
|
|
|
|
/* print result to console */
|
|
print_identifier ();
|
|
if ((result & (1 << 16)) == (1 << 16))
|
|
printf("R");
|
|
if ((result & (1 << 17)) == (1 << 17))
|
|
printf("L");
|
|
if (((result & (1 << 16)) == 0) && ((result & (1 << 17)) == 0))
|
|
printf("0");
|
|
if ((result & (1 << 18)) == 0)
|
|
printf("0\n");
|
|
else
|
|
printf("1\n");
|
|
return 0;
|
|
}
|
|
|
|
|
|
int do_vfd_id (void)
|
|
{
|
|
int i;
|
|
long int pcup_old, pccon_old;
|
|
int vfd_board_id;
|
|
struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
|
|
|
|
/* try to red vfd board id from the value defined by pull-ups */
|
|
|
|
pcup_old = gpio->PCUP;
|
|
pccon_old = gpio->PCCON;
|
|
|
|
gpio->PCUP = (gpio->PCUP & 0xFFF0); /* activate GPC0...GPC3 pull-ups */
|
|
gpio->PCCON = (gpio->PCCON & 0xFFFFFF00); /* configure GPC0...GPC3 as
|
|
* inputs */
|
|
udelay (10); /* allow signals to settle */
|
|
vfd_board_id = (~gpio->PCDAT) & 0x000F; /* read GPC0...GPC3 port pins */
|
|
|
|
gpio->PCCON = pccon_old;
|
|
gpio->PCUP = pcup_old;
|
|
|
|
/* print vfd_board_id to console */
|
|
print_identifier ();
|
|
for (i = 0; i < 4; i++) {
|
|
if ((vfd_board_id & (1 << i)) == 0)
|
|
printf("0");
|
|
else
|
|
printf("1");
|
|
}
|
|
printf("\n");
|
|
return 0;
|
|
}
|
|
|
|
int do_buzzer (char * const *argv)
|
|
{
|
|
int counter;
|
|
|
|
struct s3c24x0_timers * const timers = s3c24x0_get_base_timers();
|
|
struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
|
|
|
|
/* set prescaler for timer 2, 3 and 4 */
|
|
timers->TCFG0 &= ~0xFF00;
|
|
timers->TCFG0 |= 0x0F00;
|
|
|
|
/* set divider for timer 2 */
|
|
timers->TCFG1 &= ~0xF00;
|
|
timers->TCFG1 |= 0x300;
|
|
|
|
/* set frequency */
|
|
counter = (PCLK / BUZZER_FREQ) >> 9;
|
|
timers->ch[2].TCNTB = counter;
|
|
timers->ch[2].TCMPB = counter / 2;
|
|
|
|
if (strcmp (argv[2], "on") == 0) {
|
|
debug ("%s: frequency: %d\n", __FUNCTION__,
|
|
BUZZER_FREQ);
|
|
|
|
/* configure pin GPD7 as TOUT2 */
|
|
gpio->PDCON &= ~0xC000;
|
|
gpio->PDCON |= 0x8000;
|
|
|
|
/* start */
|
|
timers->TCON = (timers->TCON | UPDATE2 | RELOAD2) &
|
|
~INVERT2;
|
|
timers->TCON = (timers->TCON | START2) & ~UPDATE2;
|
|
return (0);
|
|
}
|
|
else if (strcmp (argv[2], "off") == 0) {
|
|
/* stop */
|
|
timers->TCON &= ~(START2 | RELOAD2);
|
|
|
|
/* configure GPD7 as output and set to low */
|
|
gpio->PDCON &= ~0xC000;
|
|
gpio->PDCON |= 0x4000;
|
|
gpio->PDDAT &= ~0x80;
|
|
return (0);
|
|
}
|
|
|
|
printf ("%s: invalid parameter %s\n", __FUNCTION__, argv[2]);
|
|
return 1;
|
|
}
|
|
|
|
|
|
int do_led (char * const *argv)
|
|
{
|
|
struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
|
|
|
|
/* configure PC14 and PC15 as output */
|
|
gpio->PCCON &= ~(0xF << 28);
|
|
gpio->PCCON |= (0x5 << 28);
|
|
|
|
/* configure PD0 and PD4 as output */
|
|
gpio->PDCON &= ~((0x3 << 8) | 0x3);
|
|
gpio->PDCON |= ((0x1 << 8) | 0x1);
|
|
|
|
switch (simple_strtoul(argv[2], NULL, 10)) {
|
|
|
|
case 0:
|
|
case 1:
|
|
break;
|
|
|
|
case 2:
|
|
if (strcmp (argv[3], "on") == 0)
|
|
gpio->PCDAT |= (1 << 14);
|
|
else
|
|
gpio->PCDAT &= ~(1 << 14);
|
|
return 0;
|
|
|
|
case 3:
|
|
if (strcmp (argv[3], "on") == 0)
|
|
gpio->PCDAT |= (1 << 15);
|
|
else
|
|
gpio->PCDAT &= ~(1 << 15);
|
|
return 0;
|
|
|
|
case 4:
|
|
if (strcmp (argv[3], "on") == 0)
|
|
gpio->PDDAT |= (1 << 0);
|
|
else
|
|
gpio->PDDAT &= ~(1 << 0);
|
|
return 0;
|
|
|
|
case 5:
|
|
if (strcmp (argv[3], "on") == 0)
|
|
gpio->PDDAT |= (1 << 4);
|
|
else
|
|
gpio->PDDAT &= ~(1 << 4);
|
|
return 0;
|
|
|
|
default:
|
|
break;
|
|
|
|
}
|
|
printf ("%s: invalid parameter %s\n", __FUNCTION__, argv[2]);
|
|
return 1;
|
|
}
|
|
|
|
|
|
int do_full_bridge (char * const *argv)
|
|
{
|
|
struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
|
|
|
|
/* configure PD5 and PD6 as output */
|
|
gpio->PDCON &= ~((0x3 << 5*2) | (0x3 << 6*2));
|
|
gpio->PDCON |= ((0x1 << 5*2) | (0x1 << 6*2));
|
|
|
|
if (strcmp (argv[2], "+") == 0) {
|
|
gpio->PDDAT |= (1 << 5);
|
|
gpio->PDDAT |= (1 << 6);
|
|
return 0;
|
|
}
|
|
else if (strcmp (argv[2], "-") == 0) {
|
|
gpio->PDDAT &= ~(1 << 5);
|
|
gpio->PDDAT |= (1 << 6);
|
|
return 0;
|
|
}
|
|
else if (strcmp (argv[2], "off") == 0) {
|
|
gpio->PDDAT &= ~(1 << 5);
|
|
gpio->PDDAT &= ~(1 << 6);
|
|
return 0;
|
|
}
|
|
printf ("%s: invalid parameter %s\n", __FUNCTION__, argv[2]);
|
|
return 1;
|
|
}
|
|
|
|
/* val must be in [0, 4095] */
|
|
static inline unsigned long tsc2000_to_uv (u16 val)
|
|
{
|
|
return ((250000 * val) / 4096) * 10;
|
|
}
|
|
|
|
|
|
int do_dac (char * const *argv)
|
|
{
|
|
int brightness;
|
|
|
|
/* initialize SPI */
|
|
tsc2000_spi_init ();
|
|
|
|
if (((brightness = simple_strtoul (argv[2], NULL, 10)) < 0) ||
|
|
(brightness > 255)) {
|
|
printf ("%s: invalid parameter %s\n", __FUNCTION__, argv[2]);
|
|
return 1;
|
|
}
|
|
tsc2000_write(TSC2000_REG_DACCTL, 0x0); /* Power up DAC */
|
|
tsc2000_write(TSC2000_REG_DAC, brightness & 0xff);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int do_v_bat (void)
|
|
{
|
|
unsigned long ret, res;
|
|
|
|
/* initialize SPI */
|
|
spi_init ();
|
|
|
|
tsc2000_write(TSC2000_REG_ADC, 0x1836);
|
|
|
|
/* now wait for data available */
|
|
adc_wait_conversion_done();
|
|
|
|
ret = tsc2000_read(TSC2000_REG_BAT1);
|
|
res = (tsc2000_to_uv(ret) + 1250) / 2500;
|
|
res += (ERROR_BATTERY * res) / 1000;
|
|
|
|
print_identifier ();
|
|
printf ("%ld", (res / 100));
|
|
printf (".%ld", ((res % 100) / 10));
|
|
printf ("%ld V\n", (res % 10));
|
|
return 0;
|
|
}
|
|
|
|
|
|
int do_pressure (void)
|
|
{
|
|
/* initialize SPI */
|
|
spi_init ();
|
|
|
|
tsc2000_write(TSC2000_REG_ADC, 0x2436);
|
|
|
|
/* now wait for data available */
|
|
adc_wait_conversion_done();
|
|
|
|
print_identifier ();
|
|
printf ("%d\n", tsc2000_read(TSC2000_REG_AUX2));
|
|
return 0;
|
|
}
|
|
|
|
|
|
int do_motor_contact (void)
|
|
{
|
|
int result;
|
|
|
|
result = *CPLD_FILL_LEVEL; /* read CPLD */
|
|
debug ("%s: cpld_fuellstand (32 bit) %#x\n", __FUNCTION__, result);
|
|
|
|
/* print result to console */
|
|
print_identifier ();
|
|
if ((result & (1 << 17)) == 0)
|
|
printf("0\n");
|
|
else
|
|
printf("1\n");
|
|
return 0;
|
|
}
|
|
|
|
int do_motor (char * const *argv)
|
|
{
|
|
struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
|
|
|
|
/* Configure I/O port */
|
|
gpio->PGCON &= ~(0x3 << 0);
|
|
gpio->PGCON |= (0x1 << 0);
|
|
|
|
if (strcmp (argv[2], "on") == 0) {
|
|
gpio->PGDAT &= ~(1 << 0);
|
|
return 0;
|
|
}
|
|
if (strcmp (argv[2], "off") == 0) {
|
|
gpio->PGDAT |= (1 << 0);
|
|
return 0;
|
|
}
|
|
printf ("%s: invalid parameter %s\n", __FUNCTION__, argv[2]);
|
|
return 1;
|
|
}
|
|
|
|
static void print_identifier (void)
|
|
{
|
|
printf ("## FKT: ");
|
|
}
|
|
|
|
int do_pwm (char * const *argv)
|
|
{
|
|
int counter;
|
|
struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
|
|
struct s3c24x0_timers * const timers = s3c24x0_get_base_timers();
|
|
|
|
if (strcmp (argv[2], "on") == 0) {
|
|
/* configure pin GPD8 as TOUT3 */
|
|
gpio->PDCON &= ~(0x3 << 8*2);
|
|
gpio->PDCON |= (0x2 << 8*2);
|
|
|
|
/* set prescaler for timer 2, 3 and 4 */
|
|
timers->TCFG0 &= ~0xFF00;
|
|
timers->TCFG0 |= 0x0F00;
|
|
|
|
/* set divider for timer 3 */
|
|
timers->TCFG1 &= ~(0xf << 12);
|
|
timers->TCFG1 |= (0x3 << 12);
|
|
|
|
/* set frequency */
|
|
counter = (PCLK / PWM_FREQ) >> 9;
|
|
timers->ch[3].TCNTB = counter;
|
|
timers->ch[3].TCMPB = counter / 2;
|
|
|
|
/* start timer */
|
|
timers->TCON = (timers->TCON | UPDATE3 | RELOAD3) & ~INVERT3;
|
|
timers->TCON = (timers->TCON | START3) & ~UPDATE3;
|
|
return 0;
|
|
}
|
|
if (strcmp (argv[2], "off") == 0) {
|
|
|
|
/* stop timer */
|
|
timers->TCON &= ~(START2 | RELOAD2);
|
|
|
|
/* configure pin GPD8 as output and set to 0 */
|
|
gpio->PDCON &= ~(0x3 << 8*2);
|
|
gpio->PDCON |= (0x1 << 8*2);
|
|
gpio->PDDAT &= ~(1 << 8);
|
|
return 0;
|
|
}
|
|
printf ("%s: invalid parameter %s\n", __FUNCTION__, argv[2]);
|
|
return 1;
|
|
}
|
|
|
|
|
|
int do_thermo (char * const *argv)
|
|
{
|
|
int channel, res;
|
|
|
|
tsc2000_reg_init ();
|
|
|
|
if (strcmp (argv[2], "all") == 0) {
|
|
int i;
|
|
for (i=0; i <= 15; i++) {
|
|
res = tsc2000_read_channel(i);
|
|
print_identifier ();
|
|
printf ("c%d: %d\n", i, res);
|
|
}
|
|
return 0;
|
|
}
|
|
channel = simple_strtoul (argv[2], NULL, 10);
|
|
res = tsc2000_read_channel(channel);
|
|
print_identifier ();
|
|
printf ("%d\n", res);
|
|
return 0; /* return OK */
|
|
}
|
|
|
|
|
|
int do_touch (char * const *argv)
|
|
{
|
|
int x, y;
|
|
|
|
if (strcmp (argv[2], "tl") == 0) {
|
|
#ifdef CONFIG_TOUCH_WAIT_PRESSED
|
|
touch_wait_pressed();
|
|
#else
|
|
{
|
|
int i;
|
|
for (i = 0; i < (TOUCH_TIMEOUT * 1000); i++) {
|
|
if (touch_check_pressed ()) {
|
|
break;
|
|
}
|
|
udelay (1000); /* pause 1 ms */
|
|
}
|
|
}
|
|
if (!touch_check_pressed()) {
|
|
print_identifier ();
|
|
printf ("error: touch not pressed\n");
|
|
return 1;
|
|
}
|
|
#endif /* CONFIG_TOUCH_WAIT_PRESSED */
|
|
touch_read_x_y (&x, &y);
|
|
|
|
print_identifier ();
|
|
printf ("x=%d y=%d\n", x, y);
|
|
return touch_write_clibration_values (CALIB_TL, x, y);
|
|
}
|
|
else if (strcmp (argv[2], "dr") == 0) {
|
|
#ifdef CONFIG_TOUCH_WAIT_PRESSED
|
|
touch_wait_pressed();
|
|
#else
|
|
{
|
|
int i;
|
|
for (i = 0; i < (TOUCH_TIMEOUT * 1000); i++) {
|
|
if (touch_check_pressed ()) {
|
|
break;
|
|
}
|
|
udelay (1000); /* pause 1 ms */
|
|
}
|
|
}
|
|
if (!touch_check_pressed()) {
|
|
print_identifier ();
|
|
printf ("error: touch not pressed\n");
|
|
return 1;
|
|
}
|
|
#endif /* CONFIG_TOUCH_WAIT_PRESSED */
|
|
touch_read_x_y (&x, &y);
|
|
|
|
print_identifier ();
|
|
printf ("x=%d y=%d\n", x, y);
|
|
|
|
return touch_write_clibration_values (CALIB_DR, x, y);
|
|
}
|
|
return 1; /* not "tl", nor "dr", so return error */
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_TOUCH_WAIT_PRESSED
|
|
static void touch_wait_pressed (void)
|
|
{
|
|
while (!(tsc2000_read(TSC2000_REG_ADC) & TC_PSM));
|
|
}
|
|
|
|
#else
|
|
static int touch_check_pressed (void)
|
|
{
|
|
return (tsc2000_read(TSC2000_REG_ADC) & TC_PSM);
|
|
}
|
|
#endif /* CONFIG_TOUCH_WAIT_PRESSED */
|
|
|
|
static int touch_write_clibration_values (int calib_point, int x, int y)
|
|
{
|
|
#if defined(CONFIG_CMD_I2C)
|
|
int x_verify = 0;
|
|
int y_verify = 0;
|
|
|
|
tsc2000_reg_init ();
|
|
|
|
if (calib_point == CALIB_TL) {
|
|
if (i2c_write_multiple (I2C_EEPROM_DEV_ADDR, TOUCH_X0, 1,
|
|
(unsigned char *)&x, 2)) {
|
|
return 1;
|
|
}
|
|
if (i2c_write_multiple (I2C_EEPROM_DEV_ADDR, TOUCH_Y0, 1,
|
|
(unsigned char *)&y, 2)) {
|
|
return 1;
|
|
}
|
|
|
|
/* verify written values */
|
|
if (i2c_read_multiple (I2C_EEPROM_DEV_ADDR, TOUCH_X0, 1,
|
|
(unsigned char *)&x_verify, 2)) {
|
|
return 1;
|
|
}
|
|
if (i2c_read_multiple (I2C_EEPROM_DEV_ADDR, TOUCH_Y0, 1,
|
|
(unsigned char *)&y_verify, 2)) {
|
|
return 1;
|
|
}
|
|
if ((y != y_verify) || (x != x_verify)) {
|
|
print_identifier ();
|
|
printf ("error: verify error\n");
|
|
return 1;
|
|
}
|
|
return 0; /* no error */
|
|
}
|
|
else if (calib_point == CALIB_DR) {
|
|
if (i2c_write_multiple (I2C_EEPROM_DEV_ADDR, TOUCH_X1, 1,
|
|
(unsigned char *)&x, 2)) {
|
|
return 1;
|
|
}
|
|
if (i2c_write_multiple (I2C_EEPROM_DEV_ADDR, TOUCH_Y1, 1,
|
|
(unsigned char *)&y, 2)) {
|
|
return 1;
|
|
}
|
|
|
|
/* verify written values */
|
|
if (i2c_read_multiple (I2C_EEPROM_DEV_ADDR, TOUCH_X1, 1,
|
|
(unsigned char *)&x_verify, 2)) {
|
|
return 1;
|
|
}
|
|
if (i2c_read_multiple (I2C_EEPROM_DEV_ADDR, TOUCH_Y1, 1,
|
|
(unsigned char *)&y_verify, 2)) {
|
|
return 1;
|
|
}
|
|
if ((y != y_verify) || (x != x_verify)) {
|
|
print_identifier ();
|
|
printf ("error: verify error\n");
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
return 1;
|
|
#else
|
|
printf ("No I2C support enabled (CONFIG_CMD_I2C), could not write "
|
|
"to EEPROM\n");
|
|
return (1);
|
|
#endif
|
|
}
|
|
|
|
|
|
static void touch_read_x_y (int *px, int *py)
|
|
{
|
|
tsc2000_write(TSC2000_REG_ADC, DEFAULT_ADC | TC_AD0 | TC_AD1);
|
|
adc_wait_conversion_done();
|
|
*px = tsc2000_read(TSC2000_REG_X);
|
|
|
|
tsc2000_write(TSC2000_REG_ADC, DEFAULT_ADC | TC_AD2);
|
|
adc_wait_conversion_done();
|
|
*py = tsc2000_read(TSC2000_REG_Y);
|
|
}
|
|
|
|
|
|
int do_rs485 (char * const *argv)
|
|
{
|
|
int timeout;
|
|
char data[RS485_MAX_RECEIVE_BUF_LEN];
|
|
|
|
if (strcmp (argv[2], "send") == 0) {
|
|
return (rs485_send_line (argv[3]));
|
|
}
|
|
else if (strcmp (argv[2], "receive") == 0) {
|
|
timeout = simple_strtoul(argv[3], NULL, 10);
|
|
if (rs485_receive_chars (data, timeout) != 0) {
|
|
print_identifier ();
|
|
printf ("## nothing received\n");
|
|
return (1);
|
|
}
|
|
else {
|
|
print_identifier ();
|
|
printf ("%s\n", data);
|
|
return (0);
|
|
}
|
|
}
|
|
printf ("%s: unknown command %s\n", __FUNCTION__, argv[2]);
|
|
return (1); /* unknown command, return error */
|
|
}
|
|
|
|
|
|
static int rs485_send_line (const char *data)
|
|
{
|
|
rs485_init ();
|
|
trab_rs485_enable_tx ();
|
|
rs485_puts (data);
|
|
rs485_putc ('\n');
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
static int rs485_receive_chars (char *data, int timeout)
|
|
{
|
|
int i;
|
|
int receive_count = 0;
|
|
|
|
rs485_init ();
|
|
trab_rs485_enable_rx ();
|
|
|
|
/* test every 1 ms for received characters to avoid a receive FIFO
|
|
* overrun (@ 38.400 Baud) */
|
|
for (i = 0; i < (timeout * 1000); i++) {
|
|
while (rs485_tstc ()) {
|
|
if (receive_count >= RS485_MAX_RECEIVE_BUF_LEN-1)
|
|
break;
|
|
*data++ = rs485_getc ();
|
|
receive_count++;
|
|
}
|
|
udelay (1000); /* pause 1 ms */
|
|
}
|
|
*data = '\0'; /* terminate string */
|
|
|
|
if (receive_count == 0)
|
|
return (1);
|
|
else
|
|
return (0);
|
|
}
|
|
|
|
|
|
int do_serial_number (char * const *argv)
|
|
{
|
|
#if defined(CONFIG_CMD_I2C)
|
|
unsigned int serial_number;
|
|
|
|
if (strcmp (argv[2], "read") == 0) {
|
|
if (i2c_read (I2C_EEPROM_DEV_ADDR, SERIAL_NUMBER, 1,
|
|
(unsigned char *)&serial_number, 4)) {
|
|
printf ("could not read from eeprom\n");
|
|
return (1);
|
|
}
|
|
print_identifier ();
|
|
printf ("%08d\n", serial_number);
|
|
return (0);
|
|
}
|
|
else if (strcmp (argv[2], "write") == 0) {
|
|
serial_number = simple_strtoul(argv[3], NULL, 10);
|
|
if (i2c_write (I2C_EEPROM_DEV_ADDR, SERIAL_NUMBER, 1,
|
|
(unsigned char *)&serial_number, 4)) {
|
|
printf ("could not write to eeprom\n");
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
printf ("%s: unknown command %s\n", __FUNCTION__, argv[2]);
|
|
return (1); /* unknown command, return error */
|
|
#else
|
|
printf ("No I2C support enabled (CONFIG_CMD_I2C), could not write "
|
|
"to EEPROM\n");
|
|
return (1);
|
|
#endif
|
|
}
|
|
|
|
|
|
int do_crc16 (void)
|
|
{
|
|
#if defined(CONFIG_CMD_I2C)
|
|
int crc;
|
|
unsigned char buf[EEPROM_MAX_CRC_BUF];
|
|
|
|
if (i2c_read (I2C_EEPROM_DEV_ADDR, 0, 1, buf, 60)) {
|
|
printf ("could not read from eeprom\n");
|
|
return (1);
|
|
}
|
|
crc = 0; /* start value of crc calculation */
|
|
crc = updcrc (crc, buf, 60);
|
|
|
|
print_identifier ();
|
|
printf ("crc16=%#04x\n", crc);
|
|
|
|
if (i2c_write (I2C_EEPROM_DEV_ADDR, CRC16, 1, (unsigned char *)&crc,
|
|
sizeof (crc))) {
|
|
printf ("could not read from eeprom\n");
|
|
return (1);
|
|
}
|
|
return (0);
|
|
#else
|
|
printf ("No I2C support enabled (CONFIG_CMD_I2C), could not write "
|
|
"to EEPROM\n");
|
|
return (1);
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* Calculate, intelligently, the CRC of a dataset incrementally given a
|
|
* buffer full at a time.
|
|
* Initialize crc to 0 for XMODEM, -1 for CCITT.
|
|
*
|
|
* Usage:
|
|
* newcrc = updcrc( oldcrc, bufadr, buflen )
|
|
* unsigned int oldcrc, buflen;
|
|
* char *bufadr;
|
|
*
|
|
* Compile with -DTEST to generate program that prints CRC of stdin to stdout.
|
|
* Compile with -DMAKETAB to print values for crctab to stdout
|
|
*/
|
|
|
|
/* the CRC polynomial. This is used by XMODEM (almost CCITT).
|
|
* If you change P, you must change crctab[]'s initial value to what is
|
|
* printed by initcrctab()
|
|
*/
|
|
#define P 0x1021
|
|
|
|
/* number of bits in CRC: don't change it. */
|
|
#define W 16
|
|
|
|
/* this the number of bits per char: don't change it. */
|
|
#define B 8
|
|
|
|
static unsigned short crctab[1<<B] = { /* as calculated by initcrctab() */
|
|
0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
|
|
0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
|
|
0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
|
|
0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
|
|
0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
|
|
0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
|
|
0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
|
|
0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
|
|
0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
|
|
0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
|
|
0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
|
|
0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
|
|
0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
|
|
0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
|
|
0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
|
|
0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
|
|
0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
|
|
0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
|
|
0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
|
|
0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
|
|
0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
|
|
0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
|
|
0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
|
|
0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
|
|
0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
|
|
0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
|
|
0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
|
|
0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
|
|
0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
|
|
0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
|
|
0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
|
|
0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0
|
|
};
|
|
|
|
static unsigned short updcrc(unsigned short icrc, unsigned char *icp,
|
|
unsigned int icnt )
|
|
{
|
|
register unsigned short crc = icrc;
|
|
register unsigned char *cp = icp;
|
|
register unsigned int cnt = icnt;
|
|
|
|
while (cnt--)
|
|
crc = (crc<<B) ^ crctab[(crc>>(W-B)) ^ *cp++];
|
|
|
|
return (crc);
|
|
}
|
|
|
|
|
|
int do_gain (char * const *argv)
|
|
{
|
|
int range;
|
|
|
|
range = simple_strtoul (argv[2], NULL, 10);
|
|
if ((range < 1) || (range > 3))
|
|
{
|
|
printf ("%s: invalid parameter %s\n", __FUNCTION__, argv[2]);
|
|
return 1;
|
|
}
|
|
|
|
tsc2000_set_range (range);
|
|
return (0);
|
|
}
|
|
|
|
|
|
int do_eeprom (char * const *argv)
|
|
{
|
|
#if defined(CONFIG_CMD_I2C)
|
|
if (strcmp (argv[2], "read") == 0) {
|
|
return (trab_eeprom_read (argv));
|
|
}
|
|
|
|
else if (strcmp (argv[2], "write") == 0) {
|
|
return (trab_eeprom_write (argv));
|
|
}
|
|
|
|
printf ("%s: invalid parameter %s\n", __FUNCTION__, argv[2]);
|
|
return (1);
|
|
#else
|
|
printf ("No I2C support enabled (CONFIG_CMD_I2C), could not write "
|
|
"to EEPROM\n");
|
|
return (1);
|
|
#endif
|
|
}
|
|
|
|
#if defined(CONFIG_CMD_I2C)
|
|
static int trab_eeprom_read (char * const *argv)
|
|
{
|
|
int i;
|
|
int len;
|
|
unsigned int addr;
|
|
long int value = 0;
|
|
uchar *buffer;
|
|
|
|
buffer = (uchar *) &value;
|
|
addr = simple_strtoul (argv[3], NULL, 10);
|
|
addr &= 0xfff;
|
|
len = simple_strtoul (argv[4], NULL, 10);
|
|
if ((len < 1) || (len > 4)) {
|
|
printf ("%s: invalid parameter %s\n", __FUNCTION__,
|
|
argv[4]);
|
|
return (1);
|
|
}
|
|
for (i = 0; i < len; i++) {
|
|
if (i2c_read (I2C_EEPROM_DEV_ADDR, addr+i, 1, buffer+i, 1)) {
|
|
printf ("%s: could not read from i2c device %#x"
|
|
", addr %d\n", __FUNCTION__,
|
|
I2C_EEPROM_DEV_ADDR, addr);
|
|
return (1);
|
|
}
|
|
}
|
|
print_identifier ();
|
|
if (strcmp (argv[5], "-") == 0) {
|
|
if (len == 1)
|
|
printf ("%d\n", (signed char) value);
|
|
else if (len == 2)
|
|
printf ("%d\n", (signed short int) value);
|
|
else
|
|
printf ("%ld\n", value);
|
|
}
|
|
else {
|
|
if (len == 1)
|
|
printf ("%d\n", (unsigned char) value);
|
|
else if (len == 2)
|
|
printf ("%d\n", (unsigned short int) value);
|
|
else
|
|
printf ("%ld\n", (unsigned long int) value);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int trab_eeprom_write (char * const *argv)
|
|
{
|
|
int i;
|
|
int len;
|
|
unsigned int addr;
|
|
long int value = 0;
|
|
uchar *buffer;
|
|
|
|
buffer = (uchar *) &value;
|
|
addr = simple_strtoul (argv[3], NULL, 10);
|
|
addr &= 0xfff;
|
|
len = simple_strtoul (argv[4], NULL, 10);
|
|
if ((len < 1) || (len > 4)) {
|
|
printf ("%s: invalid parameter %s\n", __FUNCTION__,
|
|
argv[4]);
|
|
return (1);
|
|
}
|
|
value = simple_strtol (argv[5], NULL, 10);
|
|
debug ("value=%ld\n", value);
|
|
for (i = 0; i < len; i++) {
|
|
if (i2c_write (I2C_EEPROM_DEV_ADDR, addr+i, 1, buffer+i, 1)) {
|
|
printf ("%s: could not write to i2c device %d"
|
|
", addr %d\n", __FUNCTION__,
|
|
I2C_EEPROM_DEV_ADDR, addr);
|
|
return (1);
|
|
}
|
|
#if 0
|
|
printf ("chip=%#x, addr+i=%#x+%d=%p, alen=%d, *buffer+i="
|
|
"%#x+%d=%p=%#x \n",I2C_EEPROM_DEV_ADDR_DEV_ADDR , addr,
|
|
i, addr+i, 1, buffer, i, buffer+i, *(buffer+i));
|
|
#endif
|
|
udelay (30000); /* wait for EEPROM ready */
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int i2c_write_multiple (uchar chip, uint addr, int alen,
|
|
uchar *buffer, int len)
|
|
{
|
|
int i;
|
|
|
|
if (alen != 1) {
|
|
printf ("%s: addr len other than 1 not supported\n",
|
|
__FUNCTION__);
|
|
return (1);
|
|
}
|
|
|
|
for (i = 0; i < len; i++) {
|
|
if (i2c_write (chip, addr+i, alen, buffer+i, 1)) {
|
|
printf ("%s: could not write to i2c device %d"
|
|
", addr %d\n", __FUNCTION__, chip, addr);
|
|
return (1);
|
|
}
|
|
#if 0
|
|
printf ("chip=%#x, addr+i=%#x+%d=%p, alen=%d, *buffer+i="
|
|
"%#x+%d=%p=\"%.1s\"\n", chip, addr, i, addr+i,
|
|
alen, buffer, i, buffer+i, buffer+i);
|
|
#endif
|
|
|
|
udelay (30000);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int i2c_read_multiple ( uchar chip, uint addr, int alen,
|
|
uchar *buffer, int len)
|
|
{
|
|
int i;
|
|
|
|
if (alen != 1) {
|
|
printf ("%s: addr len other than 1 not supported\n",
|
|
__FUNCTION__);
|
|
return (1);
|
|
}
|
|
|
|
for (i = 0; i < len; i++) {
|
|
if (i2c_read (chip, addr+i, alen, buffer+i, 1)) {
|
|
printf ("%s: could not read from i2c device %#x"
|
|
", addr %d\n", __FUNCTION__, chip, addr);
|
|
return (1);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
#endif
|