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@ -9,7 +9,8 @@ using namespace Pinetime::Drivers;
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SpiMaster::SpiMaster(const SpiMaster::SpiModule spi, const SpiMaster::Parameters ¶ms) :
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spi{spi}, params{params} {
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mutex = xSemaphoreCreateBinary();
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ASSERT(mutex != NULL);
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}
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bool SpiMaster::Init() {
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@ -68,6 +69,8 @@ bool SpiMaster::Init() {
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NRFX_IRQ_PRIORITY_SET(SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQn,2);
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NRFX_IRQ_ENABLE(SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQn);
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xSemaphoreGive(mutex);
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return true;
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}
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@ -82,6 +85,7 @@ void SpiMaster::SetupWorkaroundForFtpan58(NRF_SPIM_Type *spim, uint32_t ppi_chan
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NRF_PPI->CH[ppi_channel].EEP = (uint32_t) &NRF_GPIOTE->EVENTS_IN[gpiote_channel];
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NRF_PPI->CH[ppi_channel].TEP = (uint32_t) &spim->TASKS_STOP;
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NRF_PPI->CHENSET = 1U << ppi_channel;
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spiBaseAddress->EVENTS_END = 0;
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// Disable IRQ
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spim->INTENCLR = (1<<6);
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@ -94,13 +98,16 @@ void SpiMaster::DisableWorkaroundForFtpan58(NRF_SPIM_Type *spim, uint32_t ppi_ch
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NRF_PPI->CH[ppi_channel].EEP = 0;
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NRF_PPI->CH[ppi_channel].TEP = 0;
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NRF_PPI->CHENSET = ppi_channel;
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spiBaseAddress->EVENTS_END = 0;
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spim->INTENSET = (1<<6);
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spim->INTENSET = (1<<1);
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spim->INTENSET = (1<<19);
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}
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void SpiMaster::OnEndEvent() {
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if(!busy) return;
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if(currentBufferAddr == 0) {
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return;
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}
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auto s = currentBufferSize;
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if(s > 0) {
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@ -113,21 +120,21 @@ void SpiMaster::OnEndEvent() {
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} else {
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uint8_t* buffer = nullptr;
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size_t size = 0;
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busy = false;
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if(taskToNotify != nullptr) {
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BaseType_t xHigherPriorityTaskWoken = pdFALSE;
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vTaskNotifyGiveFromISR(taskToNotify, &xHigherPriorityTaskWoken);
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portYIELD_FROM_ISR(xHigherPriorityTaskWoken);
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}
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if(taskToNotify != nullptr) {
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nrf_gpio_pin_set(this->pinCsn);
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currentBufferAddr = 0;
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BaseType_t xHigherPriorityTaskWoken = pdFALSE;
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vTaskNotifyGiveFromISR(taskToNotify, &xHigherPriorityTaskWoken);
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xSemaphoreGiveFromISR(mutex, &xHigherPriorityTaskWoken);
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portYIELD_FROM_ISR(xHigherPriorityTaskWoken);
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}
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nrf_gpio_pin_set(pinCsn);
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}
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}
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void SpiMaster::OnStartedEvent() {
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if(!busy) return;
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}
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void SpiMaster::PrepareTx(const volatile uint32_t bufferAddress, const volatile size_t size) {
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@ -142,10 +149,9 @@ void SpiMaster::PrepareTx(const volatile uint32_t bufferAddress, const volatile
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bool SpiMaster::Write(const uint8_t *data, size_t size) {
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if(data == nullptr) return false;
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auto ok = xSemaphoreTake(mutex, portMAX_DELAY);
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ASSERT(ok == true);
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taskToNotify = xTaskGetCurrentTaskHandle();
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while(busy) {
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asm("nop");
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}
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if(size == 1) {
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SetupWorkaroundForFtpan58(spiBaseAddress, 0,0);
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@ -157,7 +163,6 @@ bool SpiMaster::Write(const uint8_t *data, size_t size) {
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currentBufferAddr = (uint32_t)data;
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currentBufferSize = size;
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busy = true;
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auto currentSize = std::min((size_t)255, (size_t)currentBufferSize);
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PrepareTx(currentBufferAddr, currentSize);
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@ -167,7 +172,7 @@ bool SpiMaster::Write(const uint8_t *data, size_t size) {
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if(size == 1) {
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while (spiBaseAddress->EVENTS_END == 0);
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busy = false;
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xSemaphoreGive(mutex);
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}
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return true;
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