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Workaround for SPI bus being asleep.

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This needs to get cherrypicked to another PR as SPI Sleep needs to use a semaphore or something
This commit is contained in:
Tim Keller 2021-10-17 21:33:01 +00:00
parent 1dd7174480
commit 2690c274af
2 changed files with 15 additions and 3 deletions
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16
src/drivers/SpiMaster.cpp
View file

@ -10,7 +10,7 @@ SpiMaster::SpiMaster(const SpiMaster::SpiModule spi, const SpiMaster::Parameters
}
bool SpiMaster::Init() {
if(mutex == nullptr) {
if (mutex == nullptr) {
mutex = xSemaphoreCreateBinary();
ASSERT(mutex != nullptr);
}
@ -179,6 +179,10 @@ void SpiMaster::PrepareRx(const volatile uint32_t cmdAddress,
bool SpiMaster::Write(uint8_t pinCsn, const uint8_t* data, size_t size) {
if (data == nullptr)
return false;
if (!active) {
Wakeup();
}
auto ok = xSemaphoreTake(mutex, portMAX_DELAY);
ASSERT(ok == true);
taskToNotify = xTaskGetCurrentTaskHandle();
@ -215,7 +219,9 @@ bool SpiMaster::Write(uint8_t pinCsn, const uint8_t* data, size_t size) {
bool SpiMaster::Read(uint8_t pinCsn, uint8_t* cmd, size_t cmdSize, uint8_t* data, size_t dataSize) {
xSemaphoreTake(mutex, portMAX_DELAY);
if (!active) {
Wakeup();
}
taskToNotify = nullptr;
this->pinCsn = pinCsn;
@ -253,12 +259,16 @@ void SpiMaster::Sleep() {
nrf_gpio_cfg_default(params.pinSCK);
nrf_gpio_cfg_default(params.pinMOSI);
nrf_gpio_cfg_default(params.pinMISO);
active = false;
NRF_LOG_INFO("[SPIMASTER] sleep")
}
void SpiMaster::Wakeup() {
if (active) {
return;
}
Init();
active = true;
NRF_LOG_INFO("[SPIMASTER] Wakeup");
}

2
src/drivers/SpiMaster.h
View file

@ -60,6 +60,8 @@ namespace Pinetime {
volatile size_t currentBufferSize = 0;
volatile TaskHandle_t taskToNotify;
SemaphoreHandle_t mutex = nullptr;
bool active;
};
}
}