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#include "furi-hal-spi.h"
#include "furi-hal-resources.h"
#include <stdbool.h>
#include <string.h>
#include <furi.h>
#include <stm32wbxx_ll_spi.h>
#include <stm32wbxx_ll_utils.h>
#include <stm32wbxx_ll_cortex.h>
#define TAG "FuriHalSpi"
void furi_hal_spi_init() {
// Spi structure is const, but mutex is not
// Need some hell-ish casting to make it work
*(osMutexId_t*)spi_r.mutex = osMutexNew(NULL);
*(osMutexId_t*)spi_d.mutex = osMutexNew(NULL);
//
for (size_t i=0; i<FuriHalSpiDeviceIdMax; ++i) {
hal_gpio_write(furi_hal_spi_devices[i].chip_select, true);
hal_gpio_init(
furi_hal_spi_devices[i].chip_select,
GpioModeOutputPushPull,
GpioPullNo,
GpioSpeedVeryHigh
);
}
hal_gpio_init_ex(&gpio_spi_r_miso, GpioModeAltFunctionPushPull, GpioPullNo, GpioSpeedVeryHigh, GpioAltFn5SPI1);
hal_gpio_init_ex(&gpio_spi_r_mosi, GpioModeAltFunctionPushPull, GpioPullNo, GpioSpeedVeryHigh, GpioAltFn5SPI1);
hal_gpio_init_ex(&gpio_spi_r_sck, GpioModeAltFunctionPushPull, GpioPullNo, GpioSpeedVeryHigh, GpioAltFn5SPI1);
hal_gpio_init_ex(&gpio_spi_d_miso, GpioModeAltFunctionPushPull, GpioPullUp, GpioSpeedVeryHigh, GpioAltFn5SPI2);
hal_gpio_init_ex(&gpio_spi_d_mosi, GpioModeAltFunctionPushPull, GpioPullUp, GpioSpeedVeryHigh, GpioAltFn5SPI2);
hal_gpio_init_ex(&gpio_spi_d_sck, GpioModeAltFunctionPushPull, GpioPullUp, GpioSpeedVeryHigh, GpioAltFn5SPI2);
FURI_LOG_I(TAG, "Init OK");
}
void furi_hal_spi_bus_lock(const FuriHalSpiBus* bus) {
furi_assert(bus);
furi_check(osMutexAcquire(*bus->mutex, osWaitForever) == osOK);
}
void furi_hal_spi_bus_unlock(const FuriHalSpiBus* bus) {
furi_assert(bus);
furi_check(osMutexRelease(*bus->mutex) == osOK);
}
void furi_hal_spi_bus_configure(const FuriHalSpiBus* bus, const LL_SPI_InitTypeDef* config) {
furi_assert(bus);
LL_SPI_DeInit((SPI_TypeDef*)bus->spi);
LL_SPI_Init((SPI_TypeDef*)bus->spi, (LL_SPI_InitTypeDef*)config);
LL_SPI_SetRxFIFOThreshold((SPI_TypeDef*)bus->spi, LL_SPI_RX_FIFO_TH_QUARTER);
LL_SPI_Enable((SPI_TypeDef*)bus->spi);
}
void furi_hal_spi_bus_end_txrx(const FuriHalSpiBus* bus, uint32_t timeout) {
while(LL_SPI_GetTxFIFOLevel((SPI_TypeDef *)bus->spi) != LL_SPI_TX_FIFO_EMPTY);
while(LL_SPI_IsActiveFlag_BSY((SPI_TypeDef *)bus->spi));
while(LL_SPI_GetRxFIFOLevel((SPI_TypeDef *)bus->spi) != LL_SPI_RX_FIFO_EMPTY) {
LL_SPI_ReceiveData8((SPI_TypeDef *)bus->spi);
}
}
bool furi_hal_spi_bus_rx(const FuriHalSpiBus* bus, uint8_t* buffer, size_t size, uint32_t timeout) {
furi_assert(bus);
furi_assert(buffer);
furi_assert(size > 0);
return furi_hal_spi_bus_trx(bus, buffer, buffer, size, timeout);
}
bool furi_hal_spi_bus_tx(const FuriHalSpiBus* bus, uint8_t* buffer, size_t size, uint32_t timeout) {
furi_assert(bus);
furi_assert(buffer);
furi_assert(size > 0);
bool ret = true;
while(size > 0) {
if (LL_SPI_IsActiveFlag_TXE((SPI_TypeDef *)bus->spi)) {
LL_SPI_TransmitData8((SPI_TypeDef *)bus->spi, *buffer);
buffer++;
size--;
}
}
furi_hal_spi_bus_end_txrx(bus, timeout);
LL_SPI_ClearFlag_OVR((SPI_TypeDef *)bus->spi);
return ret;
}
bool furi_hal_spi_bus_trx(const FuriHalSpiBus* bus, uint8_t* tx_buffer, uint8_t* rx_buffer, size_t size, uint32_t timeout) {
furi_assert(bus);
furi_assert(tx_buffer);
furi_assert(rx_buffer);
furi_assert(size > 0);
bool ret = true;
size_t tx_size = size;
bool tx_allowed = true;
while(size > 0) {
if(tx_size > 0 && LL_SPI_IsActiveFlag_TXE((SPI_TypeDef *)bus->spi) && tx_allowed) {
LL_SPI_TransmitData8((SPI_TypeDef *)bus->spi, *tx_buffer);
tx_buffer++;
tx_size--;
tx_allowed = false;
}
if(LL_SPI_IsActiveFlag_RXNE((SPI_TypeDef *)bus->spi)) {
*rx_buffer = LL_SPI_ReceiveData8((SPI_TypeDef *)bus->spi);
rx_buffer++;
size--;
tx_allowed = true;
}
}
furi_hal_spi_bus_end_txrx(bus, timeout);
return ret;
}
void furi_hal_spi_device_configure(const FuriHalSpiDevice* device) {
furi_assert(device);
furi_assert(device->config);
furi_hal_spi_bus_configure(device->bus, device->config);
}
const FuriHalSpiDevice* furi_hal_spi_device_get(FuriHalSpiDeviceId device_id) {
furi_assert(device_id < FuriHalSpiDeviceIdMax);
const FuriHalSpiDevice* device = &furi_hal_spi_devices[device_id];
furi_assert(device);
furi_hal_spi_bus_lock(device->bus);
furi_hal_spi_device_configure(device);
return device;
}
void furi_hal_spi_device_return(const FuriHalSpiDevice* device) {
furi_hal_spi_bus_unlock(device->bus);
}
bool furi_hal_spi_device_rx(const FuriHalSpiDevice* device, uint8_t* buffer, size_t size, uint32_t timeout) {
furi_assert(device);
furi_assert(buffer);
furi_assert(size > 0);
if (device->chip_select) {
hal_gpio_write(device->chip_select, false);
}
bool ret = furi_hal_spi_bus_rx(device->bus, buffer, size, timeout);
if (device->chip_select) {
hal_gpio_write(device->chip_select, true);
}
return ret;
}
bool furi_hal_spi_device_tx(const FuriHalSpiDevice* device, uint8_t* buffer, size_t size, uint32_t timeout) {
furi_assert(device);
furi_assert(buffer);
furi_assert(size > 0);
if (device->chip_select) {
hal_gpio_write(device->chip_select, false);
}
bool ret = furi_hal_spi_bus_tx(device->bus, buffer, size, timeout);
if (device->chip_select) {
hal_gpio_write(device->chip_select, true);
}
return ret;
}
bool furi_hal_spi_device_trx(const FuriHalSpiDevice* device, uint8_t* tx_buffer, uint8_t* rx_buffer, size_t size, uint32_t timeout) {
furi_assert(device);
furi_assert(tx_buffer);
furi_assert(rx_buffer);
furi_assert(size > 0);
if (device->chip_select) {
hal_gpio_write(device->chip_select, false);
}
bool ret = furi_hal_spi_bus_trx(device->bus, tx_buffer, rx_buffer, size, timeout);
if (device->chip_select) {
hal_gpio_write(device->chip_select, true);
}
return ret;
}
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