flipperzero-firmware/firmware/targets/f4/api-hal/api-hal-sd.c

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#include <api-hal-sd.h>
#include <api-hal-spi.h>
#include <api-hal-resources.h>
#include <api-hal-delay.h>
#include <furi.h>
void hal_sd_detect_init(void) {
// nothing to do
}
void hal_sd_detect_set_low(void) {
// nothing to do
}
bool hal_sd_detect(void) {
bool result = false;
// TODO open record
const GpioPin* sd_cs_record = &sd_cs_gpio;
// TODO: SPI manager
api_hal_spi_lock(sd_fast_spi.spi);
// configure pin as input
gpio_init_ex(sd_cs_record, GpioModeInput, GpioPullUp, GpioSpeedVeryHigh);
delay(1);
// if gpio_read == 0 return true else return false
result = !gpio_read(sd_cs_record);
// configure pin back
gpio_init_ex(sd_cs_record, GpioModeOutputPushPull, GpioPullNo, GpioSpeedVeryHigh);
gpio_write(sd_cs_record, 1);
delay(1);
// TODO: SPI manager
api_hal_spi_unlock(sd_fast_spi.spi);
return result;
}