flipperzero-firmware/firmware/targets/f5/api-hal/api-hal-subghz.c

211 lines
7.0 KiB
C
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#include "api-hal-subghz.h"
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#include <api-hal-gpio.h>
#include <api-hal-spi.h>
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#include <api-hal-resources.h>
#include <furi.h>
#include <cc1101.h>
#include <stdio.h>
static const uint8_t api_hal_subghz_preset_ook_async_regs[][2] = {
/* Base setting */
{ CC1101_IOCFG0, 0x0D }, // GD0 as async serial data output/input
{ CC1101_FSCTRL1, 0x06 }, // Set IF 26m/2^10*2=2.2MHz
{ CC1101_MCSM0, 0x18 }, // Autocalibrate on idle to TRX, ~150us OSC guard time
/* Async OOK Specific things */
{ CC1101_MDMCFG2, 0x30 }, // ASK/OOK, No preamble/sync
{ CC1101_PKTCTRL0, 0x32 }, // Async, no CRC, Infinite
{ CC1101_FREND0, 0x01 }, // OOK/ASK PATABLE
/* End */
{ 0, 0 },
};
static const uint8_t api_hal_subghz_preset_ook_async_patable[8] = {
0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
static const uint8_t api_hal_subghz_preset_2fsk_packet_regs[][2] = {
/* Base setting */
{ CC1101_IOCFG0, 0x06 }, // GD0 as async serial data output/input
{ CC1101_FSCTRL1, 0x06 }, // Set IF 26m/2^10*2=2.2MHz
{ CC1101_MCSM0, 0x18 }, // Autocalibrate on idle to TRX, ~150us OSC guard time
{ CC1101_TEST2, 0x81},
{ CC1101_TEST1, 0x35},
{ CC1101_TEST0, 0x09},
/* End */
{ 0, 0 },
};
static const uint8_t api_hal_subghz_preset_2fsk_packet_patable[8] = {
0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
void api_hal_subghz_init() {
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hal_gpio_init(&gpio_rf_sw_0, GpioModeOutputPushPull, GpioPullNo, GpioSpeedLow);
hal_gpio_init(&gpio_rf_sw_1, GpioModeOutputPushPull, GpioPullNo, GpioSpeedLow);
const ApiHalSpiDevice* device = api_hal_spi_device_get(ApiHalSpiDeviceIdSubGhz);
// Reset and shutdown
cc1101_reset(device);
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// Prepare GD0 for power on self test
hal_gpio_init(&gpio_cc1101_g0, GpioModeInput, GpioPullNo, GpioSpeedLow);
// GD0 low
cc1101_write_reg(device, CC1101_IOCFG0, CC1101IocfgHW);
while(hal_gpio_read(&gpio_cc1101_g0) != false);
// GD0 high
cc1101_write_reg(device, CC1101_IOCFG0, CC1101IocfgHW | CC1101_IOCFG_INV);
while(hal_gpio_read(&gpio_cc1101_g0) != true);
// Reset GD0 to floating state
cc1101_write_reg(device, CC1101_IOCFG0, CC1101IocfgHighImpedance);
hal_gpio_init(&gpio_cc1101_g0, GpioModeAnalog, GpioPullNo, GpioSpeedLow);
// Turn off oscillator
cc1101_shutdown(device);
api_hal_spi_device_return(device);
}
void api_hal_subghz_dump_state() {
const ApiHalSpiDevice* device = api_hal_spi_device_get(ApiHalSpiDeviceIdSubGhz);
printf(
"[api_hal_subghz] cc1101 chip %d, version %d\r\n",
cc1101_get_partnumber(device),
cc1101_get_version(device)
);
api_hal_spi_device_return(device);
}
void api_hal_subghz_load_preset(ApiHalSubGhzPreset preset) {
if(preset == ApiHalSubGhzPresetOokAsync) {
api_hal_subghz_load_registers(api_hal_subghz_preset_ook_async_regs);
api_hal_subghz_load_patable(api_hal_subghz_preset_ook_async_patable);
} else if(preset == ApiHalSubGhzPreset2FskPacket) {
api_hal_subghz_load_registers(api_hal_subghz_preset_2fsk_packet_regs);
api_hal_subghz_load_patable(api_hal_subghz_preset_2fsk_packet_patable);
}
}
uint8_t api_hal_subghz_get_status() {
const ApiHalSpiDevice* device = api_hal_spi_device_get(ApiHalSpiDeviceIdSubGhz);
CC1101StatusRaw st;
st.status = cc1101_get_status(device);
api_hal_spi_device_return(device);
return st.status_raw;
}
void api_hal_subghz_load_registers(const uint8_t data[][2]) {
const ApiHalSpiDevice* device = api_hal_spi_device_get(ApiHalSpiDeviceIdSubGhz);
cc1101_reset(device);
uint32_t i = 0;
while (data[i][0]) {
cc1101_write_reg(device, data[i][0], data[i][1]);
i++;
}
api_hal_spi_device_return(device);
}
void api_hal_subghz_load_patable(const uint8_t data[8]) {
const ApiHalSpiDevice* device = api_hal_spi_device_get(ApiHalSpiDeviceIdSubGhz);
cc1101_set_pa_table(device, data);
api_hal_spi_device_return(device);
}
void api_hal_subghz_write_packet(const uint8_t* data, uint8_t size) {
const ApiHalSpiDevice* device = api_hal_spi_device_get(ApiHalSpiDeviceIdSubGhz);
cc1101_flush_tx(device);
cc1101_write_fifo(device, data, size);
api_hal_spi_device_return(device);
}
void api_hal_subghz_flush_rx() {
const ApiHalSpiDevice* device = api_hal_spi_device_get(ApiHalSpiDeviceIdSubGhz);
cc1101_flush_rx(device);
api_hal_spi_device_return(device);
}
void api_hal_subghz_read_packet(uint8_t* data, uint8_t* size) {
const ApiHalSpiDevice* device = api_hal_spi_device_get(ApiHalSpiDeviceIdSubGhz);
cc1101_read_fifo(device, data, size);
api_hal_spi_device_return(device);
}
void api_hal_subghz_shutdown() {
const ApiHalSpiDevice* device = api_hal_spi_device_get(ApiHalSpiDeviceIdSubGhz);
// Reset and shutdown
cc1101_shutdown(device);
api_hal_spi_device_return(device);
}
void api_hal_subghz_reset() {
const ApiHalSpiDevice* device = api_hal_spi_device_get(ApiHalSpiDeviceIdSubGhz);
cc1101_reset(device);
api_hal_spi_device_return(device);
}
void api_hal_subghz_idle() {
const ApiHalSpiDevice* device = api_hal_spi_device_get(ApiHalSpiDeviceIdSubGhz);
cc1101_switch_to_idle(device);
api_hal_spi_device_return(device);
}
void api_hal_subghz_rx() {
const ApiHalSpiDevice* device = api_hal_spi_device_get(ApiHalSpiDeviceIdSubGhz);
cc1101_switch_to_rx(device);
api_hal_spi_device_return(device);
}
void api_hal_subghz_tx() {
const ApiHalSpiDevice* device = api_hal_spi_device_get(ApiHalSpiDeviceIdSubGhz);
cc1101_switch_to_tx(device);
api_hal_spi_device_return(device);
}
float api_hal_subghz_get_rssi() {
const ApiHalSpiDevice* device = api_hal_spi_device_get(ApiHalSpiDeviceIdSubGhz);
int32_t rssi_dec = cc1101_get_rssi(device);
api_hal_spi_device_return(device);
float rssi = rssi_dec;
if(rssi_dec >= 128) {
rssi = ((rssi - 256.0f) / 2.0f) - 74.0f;
} else {
rssi = (rssi / 2.0f) - 74.0f;
}
return rssi;
}
uint32_t api_hal_subghz_set_frequency(uint32_t value) {
const ApiHalSpiDevice* device = api_hal_spi_device_get(ApiHalSpiDeviceIdSubGhz);
// Compensate rounding
if (value % cc1101_get_frequency_step(device) > (cc1101_get_frequency_step(device) / 2)) {
value += cc1101_get_frequency_step(device);
}
uint32_t real_frequency = cc1101_set_frequency(device, value);
cc1101_calibrate(device);
api_hal_spi_device_return(device);
return real_frequency;
}
void api_hal_subghz_set_path(ApiHalSubGhzPath path) {
if (path == ApiHalSubGhzPath433) {
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hal_gpio_write(&gpio_rf_sw_0, 0);
hal_gpio_write(&gpio_rf_sw_1, 1);
} else if (path == ApiHalSubGhzPath315) {
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hal_gpio_write(&gpio_rf_sw_0, 1);
hal_gpio_write(&gpio_rf_sw_1, 0);
} else if (path == ApiHalSubGhzPath868) {
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hal_gpio_write(&gpio_rf_sw_0, 1);
hal_gpio_write(&gpio_rf_sw_1, 1);
} else if (path == ApiHalSubGhzPathIsolate) {
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hal_gpio_write(&gpio_rf_sw_0, 0);
hal_gpio_write(&gpio_rf_sw_1, 0);
} else {
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furi_check(0);
}
}