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Use mutex for priority inversion prevention

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This commit is contained in:
Ben V. Brown
2020-08-02 16:17:41 +10:00
parent e2c5e51fe1
commit d47c28b760
1 changed files with 9 additions and 9 deletions
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18
workspace/TS100/Core/Drivers/I2CBB.cpp
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@@ -17,14 +17,19 @@ void I2CBB::init() {
GPIO_InitTypeDef GPIO_InitStruct; GPIO_InitTypeDef GPIO_InitStruct;
__HAL_RCC_GPIOA_CLK_ENABLE(); __HAL_RCC_GPIOA_CLK_ENABLE();
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_MEDIUM; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_MEDIUM;
GPIO_InitStruct.Pin = SDA2_Pin | SCL2_Pin; GPIO_InitStruct.Pin = SDA2_Pin ;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;
GPIO_InitStruct.Pull = GPIO_PULLUP; GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(SDA2_GPIO_Port, &GPIO_InitStruct); HAL_GPIO_Init(SDA2_GPIO_Port, &GPIO_InitStruct);
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_MEDIUM;
GPIO_InitStruct.Pin = SCL2_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_OD;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(SCL2_GPIO_Port, &GPIO_InitStruct);
SOFT_SDA_HIGH(); SOFT_SDA_HIGH();
SOFT_SCL_HIGH(); SOFT_SCL_HIGH();
I2CSemaphore = xSemaphoreCreateBinaryStatic(&xSemaphoreBuffer); I2CSemaphore = xSemaphoreCreateMutexStatic (&xSemaphoreBuffer);
I2CSemaphore2 = xSemaphoreCreateBinaryStatic(&xSemaphoreBuffer2); I2CSemaphore2 = xSemaphoreCreateMutexStatic (&xSemaphoreBuffer2);
unlock(); unlock();
unlock2(); unlock2();
@@ -274,9 +279,6 @@ bool I2CBB::lock() {
asm("bkpt"); asm("bkpt");
} }
bool a = xSemaphoreTake(I2CSemaphore, (TickType_t) 100) == pdTRUE; bool a = xSemaphoreTake(I2CSemaphore, (TickType_t) 100) == pdTRUE;
if (!a) {
asm("bkpt");
}
return a; return a;
} }
@@ -302,9 +304,7 @@ bool I2CBB::lock2() {
asm("bkpt"); asm("bkpt");
} }
bool a = xSemaphoreTake(I2CSemaphore2, (TickType_t) 500) == pdTRUE; bool a = xSemaphoreTake(I2CSemaphore2, (TickType_t) 500) == pdTRUE;
if (!a) {
asm("bkpt");
}
return a; return a;
} }
#endif #endif