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-rw-r--r--drivers/arm/i2c_master.c40
-rw-r--r--drivers/arm/i2c_master.h20
2 files changed, 40 insertions, 20 deletions
diff --git a/drivers/arm/i2c_master.c b/drivers/arm/i2c_master.c
index 0e5edcc38..7369398cc 100644
--- a/drivers/arm/i2c_master.c
+++ b/drivers/arm/i2c_master.c
@@ -42,6 +42,18 @@ static const I2CConfig i2cconfig = {
0
};
+static i2c_status_t chibios_to_qmk(const msg_t* status) {
+ switch (*status) {
+ case I2C_NO_ERROR:
+ return I2C_STATUS_SUCCESS;
+ case I2C_TIMEOUT:
+ return I2C_STATUS_TIMEOUT;
+ // I2C_BUS_ERROR, I2C_ARBITRATION_LOST, I2C_ACK_FAILURE, I2C_OVERRUN, I2C_PEC_ERROR, I2C_SMB_ALERT
+ default:
+ return I2C_STATUS_ERROR;
+ }
+}
+
__attribute__ ((weak))
void i2c_init(void)
{
@@ -57,29 +69,30 @@ void i2c_init(void)
//i2cInit(); //This is invoked by halInit() so no need to redo it.
}
-// This is usually not needed
-uint8_t i2c_start(uint8_t address)
+i2c_status_t i2c_start(uint8_t address)
{
i2c_address = address;
i2cStart(&I2C_DRIVER, &i2cconfig);
- return 0;
+ return I2C_STATUS_SUCCESS;
}
-uint8_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout)
+i2c_status_t i2c_transmit(uint8_t address, const uint8_t* data, uint16_t length, uint16_t timeout)
{
i2c_address = address;
i2cStart(&I2C_DRIVER, &i2cconfig);
- return i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, 0, 0, MS2ST(timeout));
+ msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, 0, 0, MS2ST(timeout));
+ return chibios_to_qmk(&status);
}
-uint8_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout)
+i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout)
{
i2c_address = address;
i2cStart(&I2C_DRIVER, &i2cconfig);
- return i2cMasterReceiveTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, MS2ST(timeout));
+ msg_t status = i2cMasterReceiveTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, MS2ST(timeout));
+ return chibios_to_qmk(&status);
}
-uint8_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout)
+i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout)
{
i2c_address = devaddr;
i2cStart(&I2C_DRIVER, &i2cconfig);
@@ -91,18 +104,19 @@ uint8_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t l
}
complete_packet[0] = regaddr;
- return i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), complete_packet, length + 1, 0, 0, MS2ST(timeout));
+ msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), complete_packet, length + 1, 0, 0, MS2ST(timeout));
+ return chibios_to_qmk(&status);
}
-uint8_t i2c_readReg(uint8_t devaddr, uint8_t* regaddr, uint8_t* data, uint16_t length, uint16_t timeout)
+i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t* regaddr, uint8_t* data, uint16_t length, uint16_t timeout)
{
i2c_address = devaddr;
i2cStart(&I2C_DRIVER, &i2cconfig);
- return i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), regaddr, 1, data, length, MS2ST(timeout));
+ msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), regaddr, 1, data, length, MS2ST(timeout));
+ return chibios_to_qmk(&status);
}
-uint8_t i2c_stop(void)
+void i2c_stop(void)
{
i2cStop(&I2C_DRIVER);
- return 0;
}
diff --git a/drivers/arm/i2c_master.h b/drivers/arm/i2c_master.h
index 4ab2301f8..a15f1702d 100644
--- a/drivers/arm/i2c_master.h
+++ b/drivers/arm/i2c_master.h
@@ -40,11 +40,17 @@
#define I2C_DRIVER I2CD1
#endif
+typedef int16_t i2c_status_t;
+
+#define I2C_STATUS_SUCCESS (0)
+#define I2C_STATUS_ERROR (-1)
+#define I2C_STATUS_TIMEOUT (-2)
+
void i2c_init(void);
-uint8_t i2c_start(uint8_t address);
-uint8_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);
-uint8_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);
-uint8_t i2c_transmit_receive(uint8_t address, uint8_t * tx_body, uint16_t tx_length, uint8_t * rx_body, uint16_t rx_length);
-uint8_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
-uint8_t i2c_readReg(uint8_t devaddr, uint8_t* regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
-uint8_t i2c_stop(void);
+i2c_status_t i2c_start(uint8_t address);
+i2c_status_t i2c_transmit(uint8_t address, const uint8_t* data, uint16_t length, uint16_t timeout);
+i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);
+i2c_status_t i2c_transmit_receive(uint8_t address, uint8_t * tx_body, uint16_t tx_length, uint8_t * rx_body, uint16_t rx_length);
+i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout);
+i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t* regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
+void i2c_stop(void);