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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() {
furi_hal_spi_bus_init(&furi_hal_spi_bus_r);
furi_hal_spi_bus_init(&furi_hal_spi_bus_d);
furi_hal_spi_bus_handle_init(&furi_hal_spi_bus_handle_subghz);
furi_hal_spi_bus_handle_init(&furi_hal_spi_bus_handle_nfc);
furi_hal_spi_bus_handle_init(&furi_hal_spi_bus_handle_display);
furi_hal_spi_bus_handle_init(&furi_hal_spi_bus_handle_sd_fast);
furi_hal_spi_bus_handle_init(&furi_hal_spi_bus_handle_sd_slow);
FURI_LOG_I(TAG, "Init OK");
}
void furi_hal_spi_bus_init(FuriHalSpiBus* bus) {
furi_assert(bus);
bus->callback(bus, FuriHalSpiBusEventInit);
}
void furi_hal_spi_bus_deinit(FuriHalSpiBus* bus) {
furi_assert(bus);
bus->callback(bus, FuriHalSpiBusEventDeinit);
}
void furi_hal_spi_bus_handle_init(FuriHalSpiBusHandle* handle) {
furi_assert(handle);
handle->callback(handle, FuriHalSpiBusHandleEventInit);
}
void furi_hal_spi_bus_handle_deinit(FuriHalSpiBusHandle* handle) {
furi_assert(handle);
handle->callback(handle, FuriHalSpiBusHandleEventDeinit);
}
void furi_hal_spi_acquire(FuriHalSpiBusHandle* handle) {
furi_assert(handle);
handle->bus->callback(handle->bus, FuriHalSpiBusEventLock);
handle->bus->callback(handle->bus, FuriHalSpiBusEventActivate);
furi_assert(handle->bus->current_handle == NULL);
handle->bus->current_handle = handle;
handle->callback(handle, FuriHalSpiBusHandleEventActivate);
}
void furi_hal_spi_release(FuriHalSpiBusHandle* handle) {
furi_assert(handle);
furi_assert(handle->bus->current_handle == handle);
// Handle event and unset handle
handle->callback(handle, FuriHalSpiBusHandleEventDeactivate);
handle->bus->current_handle = NULL;
// Bus events
handle->bus->callback(handle->bus, FuriHalSpiBusEventDeactivate);
handle->bus->callback(handle->bus, FuriHalSpiBusEventUnlock);
}
static void furi_hal_spi_bus_end_txrx(FuriHalSpiBusHandle* handle, uint32_t timeout) {
while(LL_SPI_GetTxFIFOLevel(handle->bus->spi) != LL_SPI_TX_FIFO_EMPTY)
;
while(LL_SPI_IsActiveFlag_BSY(handle->bus->spi))
;
while(LL_SPI_GetRxFIFOLevel(handle->bus->spi) != LL_SPI_RX_FIFO_EMPTY) {
LL_SPI_ReceiveData8(handle->bus->spi);
}
}
bool furi_hal_spi_bus_rx(
FuriHalSpiBusHandle* handle,
uint8_t* buffer,
size_t size,
uint32_t timeout) {
furi_assert(handle);
furi_assert(handle->bus->current_handle == handle);
furi_assert(buffer);
furi_assert(size > 0);
return furi_hal_spi_bus_trx(handle, buffer, buffer, size, timeout);
}
bool furi_hal_spi_bus_tx(
FuriHalSpiBusHandle* handle,
uint8_t* buffer,
size_t size,
uint32_t timeout) {
furi_assert(handle);
furi_assert(handle->bus->current_handle == handle);
furi_assert(buffer);
furi_assert(size > 0);
bool ret = true;
while(size > 0) {
if(LL_SPI_IsActiveFlag_TXE(handle->bus->spi)) {
LL_SPI_TransmitData8(handle->bus->spi, *buffer);
buffer++;
size--;
}
}
furi_hal_spi_bus_end_txrx(handle, timeout);
LL_SPI_ClearFlag_OVR(handle->bus->spi);
return ret;
}
bool furi_hal_spi_bus_trx(
FuriHalSpiBusHandle* handle,
uint8_t* tx_buffer,
uint8_t* rx_buffer,
size_t size,
uint32_t timeout) {
furi_assert(handle);
furi_assert(handle->bus->current_handle == handle);
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(handle->bus->spi) && tx_allowed) {
LL_SPI_TransmitData8(handle->bus->spi, *tx_buffer);
tx_buffer++;
tx_size--;
tx_allowed = false;
}
if(LL_SPI_IsActiveFlag_RXNE(handle->bus->spi)) {
*rx_buffer = LL_SPI_ReceiveData8(handle->bus->spi);
rx_buffer++;
size--;
tx_allowed = true;
}
}
furi_hal_spi_bus_end_txrx(handle, timeout);
return ret;
}
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