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Update I2CBB.cpp

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This commit is contained in:
Ben V. Brown
2020-07-22 22:33:18 +10:00
parent b6c61cfb52
commit 164c402d1c
1 changed files with 10 additions and 6 deletions
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16
workspace/TS100/Core/BSP/Miniware/I2CBB.cpp
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@@ -13,7 +13,7 @@
#define SDA_LOW() HAL_GPIO_WritePin(SDA2_GPIO_Port, SDA2_Pin, GPIO_PIN_RESET) #define SDA_LOW() HAL_GPIO_WritePin(SDA2_GPIO_Port, SDA2_Pin, GPIO_PIN_RESET)
#define SDA_READ() (HAL_GPIO_ReadPin(SDA2_GPIO_Port,SDA2_Pin)==GPIO_PIN_SET?1:0) #define SDA_READ() (HAL_GPIO_ReadPin(SDA2_GPIO_Port,SDA2_Pin)==GPIO_PIN_SET?1:0)
#define SCL_READ() (HAL_GPIO_ReadPin(SCL2_GPIO_Port,SCL2_Pin)==GPIO_PIN_SET?1:0) #define SCL_READ() (HAL_GPIO_ReadPin(SCL2_GPIO_Port,SCL2_Pin)==GPIO_PIN_SET?1:0)
#define I2C_DELAY() {for(int xx=0;xx<1000;xx++){asm("nop");}} #define I2C_DELAY() {for(int xx=0;xx<20;xx++){asm("nop");}}
SemaphoreHandle_t I2CBB::I2CSemaphore = NULL; SemaphoreHandle_t I2CBB::I2CSemaphore = NULL;
StaticSemaphore_t I2CBB::xSemaphoreBuffer; StaticSemaphore_t I2CBB::xSemaphoreBuffer;
SemaphoreHandle_t I2CBB::I2CSemaphore2 = NULL; SemaphoreHandle_t I2CBB::I2CSemaphore2 = NULL;
@@ -34,10 +34,11 @@ void I2CBB::init() {
unlock(); unlock();
unlock2(); unlock2();
//unstick bus //unstick bus
for (int i = 0; i < 8; i++) { // start();
read_bit(); // for (int i = 0; i < 8; i++) {
} // read_bit();
stop(); // }
// stop();
} }
bool I2CBB::probe(uint8_t address) { bool I2CBB::probe(uint8_t address) {
@@ -64,6 +65,9 @@ bool I2CBB::Mem_Read(uint16_t DevAddress, uint16_t MemAddress, uint8_t *pData,
unlock(); unlock();
return false; return false;
} }
SCL_LOW();
I2C_DELAY();
// stop();
start(); start();
ack = send(DevAddress | 1); ack = send(DevAddress | 1);
if (!ack) { if (!ack) {
@@ -234,7 +238,7 @@ bool I2CBB::send(uint8_t value) {
} }
SDA_HIGH(); SDA_HIGH();
bool ack = read_bit() == 0; bool ack = (read_bit() == 0);
return ack; return ack;
} }