diff options
Diffstat (limited to 'drivers/arm')
| -rw-r--r-- | drivers/arm/i2c_master.c | 63 |
1 files changed, 51 insertions, 12 deletions
diff --git a/drivers/arm/i2c_master.c b/drivers/arm/i2c_master.c index f811b159d5..744ffb4612 100644 --- a/drivers/arm/i2c_master.c +++ b/drivers/arm/i2c_master.c @@ -29,8 +29,6 @@ #include <string.h> #include <hal.h> -static uint8_t i2c_address; - static const I2CConfig i2cconfig = { #ifdef USE_I2CV1 I2C1_OPMODE, @@ -71,22 +69,41 @@ __attribute__((weak)) void i2c_init(void) { } i2c_status_t i2c_start(uint8_t address) { - i2c_address = address; +#if I2C_USE_MUTUAL_EXCLUSION + i2cAcquireBus(&I2C_DRIVER); +#endif + i2cStart(&I2C_DRIVER, &i2cconfig); return I2C_STATUS_SUCCESS; } i2c_status_t i2c_transmit(uint8_t address, const uint8_t* data, uint16_t length, uint16_t timeout) { - i2c_address = address; +#if I2C_USE_MUTUAL_EXCLUSION + i2cAcquireBus(&I2C_DRIVER); +#endif + i2cStart(&I2C_DRIVER, &i2cconfig); - msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, 0, 0, MS2ST(timeout)); + msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (address >> 1), data, length, 0, 0, MS2ST(timeout)); + +#if I2C_USE_MUTUAL_EXCLUSION + i2cReleaseBus(&I2C_DRIVER); +#endif + return chibios_to_qmk(&status); } i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout) { - i2c_address = address; +#if I2C_USE_MUTUAL_EXCLUSION + i2cAcquireBus(&I2C_DRIVER); +#endif + i2cStart(&I2C_DRIVER, &i2cconfig); - msg_t status = i2cMasterReceiveTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, MS2ST(timeout)); + msg_t status = i2cMasterReceiveTimeout(&I2C_DRIVER, (address >> 1), data, length, MS2ST(timeout)); + +#if I2C_USE_MUTUAL_EXCLUSION + i2cReleaseBus(&I2C_DRIVER); +#endif + return chibios_to_qmk(&status); } @@ -95,7 +112,10 @@ i2c_status_t i2c_transmit_receive(uint8_t address, uint8_t * tx_body, uint16_t t } i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout) { - i2c_address = devaddr; +#if I2C_USE_MUTUAL_EXCLUSION + i2cAcquireBus(&I2C_DRIVER); +#endif + i2cStart(&I2C_DRIVER, &i2cconfig); uint8_t complete_packet[length + 1]; @@ -104,15 +124,34 @@ i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data, } complete_packet[0] = regaddr; - msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), complete_packet, length + 1, 0, 0, MS2ST(timeout)); + msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (devaddr >> 1), complete_packet, length + 1, 0, 0, MS2ST(timeout)); + +#if I2C_USE_MUTUAL_EXCLUSION + i2cReleaseBus(&I2C_DRIVER); +#endif + return chibios_to_qmk(&status); } i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout) { - i2c_address = devaddr; +#if I2C_USE_MUTUAL_EXCLUSION + i2cAcquireBus(&I2C_DRIVER); +#endif + i2cStart(&I2C_DRIVER, &i2cconfig); - msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), ®addr, 1, data, length, MS2ST(timeout)); + msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (devaddr >> 1), ®addr, 1, data, length, MS2ST(timeout)); + +#if I2C_USE_MUTUAL_EXCLUSION + i2cReleaseBus(&I2C_DRIVER); +#endif + return chibios_to_qmk(&status); } -void i2c_stop(void) { i2cStop(&I2C_DRIVER); } +void i2c_stop(void) { + i2cStop(&I2C_DRIVER); + +#if I2C_USE_MUTUAL_EXCLUSION + i2cReleaseBus(&I2C_DRIVER); +#endif +} |