mirror of
https://github.com/DarkFlippers/unleashed-firmware
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2a26680acb
* Furi: more gpio checks in HAL * Nfc: do not spawn service thread if it is already spawned Co-authored-by: Sergey Gavrilov <who.just.the.doctor@gmail.com>
103 lines
3.4 KiB
C
103 lines
3.4 KiB
C
#include "platform.h"
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#include <assert.h>
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#include <furi.h>
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#include <furi_hal_spi.h>
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typedef struct {
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FuriThread* thread;
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volatile PlatformIrqCallback callback;
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bool need_spi_lock;
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} RfalPlatform;
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static volatile RfalPlatform rfal_platform = {
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.thread = NULL,
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.callback = NULL,
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.need_spi_lock = true,
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};
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void nfc_isr(void* _ctx) {
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UNUSED(_ctx);
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if(rfal_platform.callback && platformGpioIsHigh(ST25R_INT_PORT, ST25R_INT_PIN)) {
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furi_thread_flags_set(furi_thread_get_id(rfal_platform.thread), 0x1);
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}
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}
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int32_t rfal_platform_irq_thread(void* context) {
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UNUSED(context);
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while(1) {
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uint32_t flags = furi_thread_flags_wait(0x1, FuriFlagWaitAny, FuriWaitForever);
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if(flags & 0x1) {
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rfal_platform.callback();
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}
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}
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}
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void platformEnableIrqCallback() {
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furi_hal_gpio_init(&gpio_nfc_irq_rfid_pull, GpioModeInterruptRise, GpioPullDown, GpioSpeedLow);
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furi_hal_gpio_enable_int_callback(&gpio_nfc_irq_rfid_pull);
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}
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void platformDisableIrqCallback() {
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furi_hal_gpio_init(&gpio_nfc_irq_rfid_pull, GpioModeOutputOpenDrain, GpioPullNo, GpioSpeedLow);
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furi_hal_gpio_disable_int_callback(&gpio_nfc_irq_rfid_pull);
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}
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void platformSetIrqCallback(PlatformIrqCallback callback) {
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rfal_platform.callback = callback;
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if(!rfal_platform.thread) {
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rfal_platform.thread =
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furi_thread_alloc_ex("RfalIrqDriver", 1024, rfal_platform_irq_thread, NULL);
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furi_thread_mark_as_service(rfal_platform.thread);
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furi_thread_set_priority(rfal_platform.thread, FuriThreadPriorityIsr);
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furi_thread_start(rfal_platform.thread);
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furi_hal_gpio_add_int_callback(&gpio_nfc_irq_rfid_pull, nfc_isr, NULL);
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// Disable interrupt callback as the pin is shared between 2 apps
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// It is enabled in rfalLowPowerModeStop()
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furi_hal_gpio_disable_int_callback(&gpio_nfc_irq_rfid_pull);
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}
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}
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bool platformSpiTxRx(const uint8_t* txBuf, uint8_t* rxBuf, uint16_t len) {
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bool ret = false;
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if(txBuf && rxBuf) {
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ret =
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furi_hal_spi_bus_trx(&furi_hal_spi_bus_handle_nfc, (uint8_t*)txBuf, rxBuf, len, 1000);
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} else if(txBuf) {
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ret = furi_hal_spi_bus_tx(&furi_hal_spi_bus_handle_nfc, (uint8_t*)txBuf, len, 1000);
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} else if(rxBuf) {
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ret = furi_hal_spi_bus_rx(&furi_hal_spi_bus_handle_nfc, (uint8_t*)rxBuf, len, 1000);
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}
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return ret;
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}
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// Until we completely remove RFAL, NFC works with SPI from rfal_platform_irq_thread and nfc_worker
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// threads. Some nfc features already stop using RFAL and work with SPI from nfc_worker only.
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// rfal_platform_spi_acquire() and rfal_platform_spi_release() functions are used to lock SPI for a
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// long term without locking it for each SPI transaction. This is needed for time critical communications.
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void rfal_platform_spi_acquire() {
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platformDisableIrqCallback();
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rfal_platform.need_spi_lock = false;
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furi_hal_spi_acquire(&furi_hal_spi_bus_handle_nfc);
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}
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void rfal_platform_spi_release() {
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furi_hal_spi_release(&furi_hal_spi_bus_handle_nfc);
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rfal_platform.need_spi_lock = true;
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platformEnableIrqCallback();
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}
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void platformProtectST25RComm() {
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if(rfal_platform.need_spi_lock) {
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furi_hal_spi_acquire(&furi_hal_spi_bus_handle_nfc);
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}
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}
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void platformUnprotectST25RComm() {
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if(rfal_platform.need_spi_lock) {
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furi_hal_spi_release(&furi_hal_spi_bus_handle_nfc);
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}
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}
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