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furi-hal-sd.c « furi-hal « f7 « targets « firmware - github.com/ClusterM/flipperzero-firmware.git - Unnamed repository; edit this file 'description' to name the repository.
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#include "furi-hal-sd.h"
#include <stm32wbxx_ll_gpio.h>
#include <furi.h>

void hal_sd_detect_init(void) {
    // low speed input with pullup
    LL_GPIO_SetPinMode(SD_CD_GPIO_Port, SD_CD_Pin, LL_GPIO_MODE_INPUT);
    LL_GPIO_SetPinSpeed(SD_CD_GPIO_Port, SD_CD_Pin, LL_GPIO_SPEED_FREQ_LOW);
    LL_GPIO_SetPinPull(SD_CD_GPIO_Port, SD_CD_Pin, LL_GPIO_PULL_UP);
}

void hal_sd_detect_set_low(void) {
    // low speed input with pullup
    LL_GPIO_SetPinMode(SD_CD_GPIO_Port, SD_CD_Pin, LL_GPIO_MODE_OUTPUT);
    LL_GPIO_SetPinOutputType(SD_CD_GPIO_Port, SD_CD_Pin, LL_GPIO_OUTPUT_OPENDRAIN);
    LL_GPIO_ResetOutputPin(SD_CD_GPIO_Port, SD_CD_Pin);
}

bool hal_sd_detect(void) {
    bool result = !(LL_GPIO_IsInputPinSet(SD_CD_GPIO_Port, SD_CD_Pin));
    return result;
}