#include "cc1101.h" #include <assert.h> #include <string.h> CC1101Status cc1101_strobe(FuriHalSpiBusHandle* handle, uint8_t strobe) { uint8_t tx[1] = {strobe}; CC1101Status rx[1] = {0}; while(furi_hal_gpio_read(handle->miso)) ; furi_hal_spi_bus_trx(handle, tx, (uint8_t*)rx, 1, CC1101_TIMEOUT); assert(rx[0].CHIP_RDYn == 0); return rx[0]; } CC1101Status cc1101_write_reg(FuriHalSpiBusHandle* handle, uint8_t reg, uint8_t data) { uint8_t tx[2] = {reg, data}; CC1101Status rx[2] = {0}; while(furi_hal_gpio_read(handle->miso)) ; furi_hal_spi_bus_trx(handle, tx, (uint8_t*)rx, 2, CC1101_TIMEOUT); assert((rx[0].CHIP_RDYn | rx[1].CHIP_RDYn) == 0); return rx[1]; } CC1101Status cc1101_read_reg(FuriHalSpiBusHandle* handle, uint8_t reg, uint8_t* data) { assert(sizeof(CC1101Status) == 1); uint8_t tx[2] = {reg | CC1101_READ, 0}; CC1101Status rx[2] = {0}; while(furi_hal_gpio_read(handle->miso)) ; furi_hal_spi_bus_trx(handle, tx, (uint8_t*)rx, 2, CC1101_TIMEOUT); assert((rx[0].CHIP_RDYn) == 0); *data = *(uint8_t*)&rx[1]; return rx[0]; } uint8_t cc1101_get_partnumber(FuriHalSpiBusHandle* handle) { uint8_t partnumber = 0; cc1101_read_reg(handle, CC1101_STATUS_PARTNUM | CC1101_BURST, &partnumber); return partnumber; } uint8_t cc1101_get_version(FuriHalSpiBusHandle* handle) { uint8_t version = 0; cc1101_read_reg(handle, CC1101_STATUS_VERSION | CC1101_BURST, &version); return version; } uint8_t cc1101_get_rssi(FuriHalSpiBusHandle* handle) { uint8_t rssi = 0; cc1101_read_reg(handle, CC1101_STATUS_RSSI | CC1101_BURST, &rssi); return rssi; } void cc1101_reset(FuriHalSpiBusHandle* handle) { cc1101_strobe(handle, CC1101_STROBE_SRES); } CC1101Status cc1101_get_status(FuriHalSpiBusHandle* handle) { return cc1101_strobe(handle, CC1101_STROBE_SNOP); } void cc1101_shutdown(FuriHalSpiBusHandle* handle) { cc1101_strobe(handle, CC1101_STROBE_SPWD); } void cc1101_calibrate(FuriHalSpiBusHandle* handle) { cc1101_strobe(handle, CC1101_STROBE_SCAL); } void cc1101_switch_to_idle(FuriHalSpiBusHandle* handle) { cc1101_strobe(handle, CC1101_STROBE_SIDLE); } void cc1101_switch_to_rx(FuriHalSpiBusHandle* handle) { cc1101_strobe(handle, CC1101_STROBE_SRX); } void cc1101_switch_to_tx(FuriHalSpiBusHandle* handle) { cc1101_strobe(handle, CC1101_STROBE_STX); } void cc1101_flush_rx(FuriHalSpiBusHandle* handle) { cc1101_strobe(handle, CC1101_STROBE_SFRX); } void cc1101_flush_tx(FuriHalSpiBusHandle* handle) { cc1101_strobe(handle, CC1101_STROBE_SFTX); } uint32_t cc1101_set_frequency(FuriHalSpiBusHandle* handle, uint32_t value) { uint64_t real_value = (uint64_t)value * CC1101_FDIV / CC1101_QUARTZ; // Sanity check assert((real_value & CC1101_FMASK) == real_value); cc1101_write_reg(handle, CC1101_FREQ2, (real_value >> 16) & 0xFF); cc1101_write_reg(handle, CC1101_FREQ1, (real_value >> 8) & 0xFF); cc1101_write_reg(handle, CC1101_FREQ0, (real_value >> 0) & 0xFF); uint64_t real_frequency = real_value * CC1101_QUARTZ / CC1101_FDIV; return (uint32_t)real_frequency; } uint32_t cc1101_set_intermediate_frequency(FuriHalSpiBusHandle* handle, uint32_t value) { uint64_t real_value = value * CC1101_IFDIV / CC1101_QUARTZ; assert((real_value & 0xFF) == real_value); cc1101_write_reg(handle, CC1101_FSCTRL0, (real_value >> 0) & 0xFF); uint64_t real_frequency = real_value * CC1101_QUARTZ / CC1101_IFDIV; return (uint32_t)real_frequency; } void cc1101_set_pa_table(FuriHalSpiBusHandle* handle, const uint8_t value[8]) { uint8_t tx[9] = {CC1101_PATABLE | CC1101_BURST}; //-V1009 CC1101Status rx[9] = {0}; memcpy(&tx[1], &value[0], 8); while(furi_hal_gpio_read(handle->miso)) ; furi_hal_spi_bus_trx(handle, tx, (uint8_t*)rx, sizeof(rx), CC1101_TIMEOUT); assert((rx[0].CHIP_RDYn | rx[8].CHIP_RDYn) == 0); } uint8_t cc1101_write_fifo(FuriHalSpiBusHandle* handle, const uint8_t* data, uint8_t size) { uint8_t buff_tx[64]; uint8_t buff_rx[64]; buff_tx[0] = CC1101_FIFO | CC1101_BURST; memcpy(&buff_tx[1], data, size); // Start transaction // Wait IC to become ready while(furi_hal_gpio_read(handle->miso)) ; // Tell IC what we want furi_hal_spi_bus_trx(handle, buff_tx, (uint8_t*)buff_rx, size + 1, CC1101_TIMEOUT); return size; } uint8_t cc1101_read_fifo(FuriHalSpiBusHandle* handle, uint8_t* data, uint8_t* size) { uint8_t buff_trx[2]; buff_trx[0] = CC1101_FIFO | CC1101_READ | CC1101_BURST; // Start transaction // Wait IC to become ready while(furi_hal_gpio_read(handle->miso)) ; // First byte - packet length furi_hal_spi_bus_trx(handle, buff_trx, buff_trx, 2, CC1101_TIMEOUT); // Check that the packet is placed in the receive buffer if(buff_trx[1] > 64) { *size = 64; } else { *size = buff_trx[1]; } furi_hal_spi_bus_trx(handle, NULL, data, *size, CC1101_TIMEOUT); return *size; }