flipperzero-firmware/lib/ST25RFAL002/platform.c

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#include "platform.h"
#include <assert.h>
#include <furi.h>
#include <furi_hal_spi.h>
static const osThreadAttr_t platform_irq_thread_attr = {
.name = "RfalIrqDriver",
.stack_size = 1024,
.priority = osPriorityRealtime,
};
static volatile osThreadId_t platform_irq_thread_id = NULL;
static volatile PlatformIrqCallback platform_irq_callback = NULL;
static const GpioPin pin = {ST25R_INT_PORT, ST25R_INT_PIN};
void nfc_isr(void* _ctx) {
UNUSED(_ctx);
if(platform_irq_callback && platformGpioIsHigh(ST25R_INT_PORT, ST25R_INT_PIN)) {
osThreadFlagsSet(platform_irq_thread_id, 0x1);
}
}
void platformIrqThread() {
while(1) {
uint32_t flags = osThreadFlagsWait(0x1, osFlagsWaitAny, osWaitForever);
if(flags & 0x1) {
platform_irq_callback();
}
}
}
void platformEnableIrqCallback() {
furi_hal_gpio_init(&pin, GpioModeInterruptRise, GpioPullDown, GpioSpeedLow);
furi_hal_gpio_enable_int_callback(&pin);
}
void platformDisableIrqCallback() {
furi_hal_gpio_init(&pin, GpioModeOutputOpenDrain, GpioPullNo, GpioSpeedLow);
furi_hal_gpio_disable_int_callback(&pin);
}
void platformSetIrqCallback(PlatformIrqCallback callback) {
platform_irq_callback = callback;
platform_irq_thread_id = osThreadNew(platformIrqThread, NULL, &platform_irq_thread_attr);
furi_hal_gpio_add_int_callback(&pin, nfc_isr, NULL);
// Disable interrupt callback as the pin is shared between 2 apps
// It is enabled in rfalLowPowerModeStop()
furi_hal_gpio_disable_int_callback(&pin);
}
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bool platformSpiTxRx(const uint8_t* txBuf, uint8_t* rxBuf, uint16_t len) {
bool ret = false;
if(txBuf && rxBuf) {
ret =
furi_hal_spi_bus_trx(&furi_hal_spi_bus_handle_nfc, (uint8_t*)txBuf, rxBuf, len, 1000);
} else if(txBuf) {
ret = furi_hal_spi_bus_tx(&furi_hal_spi_bus_handle_nfc, (uint8_t*)txBuf, len, 1000);
} else if(rxBuf) {
ret = furi_hal_spi_bus_rx(&furi_hal_spi_bus_handle_nfc, (uint8_t*)rxBuf, len, 1000);
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}
return ret;
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}
void platformProtectST25RComm() {
furi_hal_spi_acquire(&furi_hal_spi_bus_handle_nfc);
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}
void platformUnprotectST25RComm() {
furi_hal_spi_release(&furi_hal_spi_bus_handle_nfc);
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}