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i2c_master: Add support for reading/writing to 16-bit registers (#14289)

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Ryan 2021-10-07 10:29:35 +11:00 • committed by GitHub
parent 875e44faac
commit bc1f5ef381
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GPG key ID: 4AEE18F83AFDEB23
5 changed files with 130 additions and 3 deletions
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25
platforms/chibios/drivers/i2c_master.c
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@ -102,7 +102,7 @@ i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data,
i2cStart(&I2C_DRIVER, &i2cconfig);
uint8_t complete_packet[length + 1];
for (uint8_t i = 0; i < length; i++) {
for (uint16_t i = 0; i < length; i++) {
complete_packet[i + 1] = data[i];
}
complete_packet[0] = regaddr;
@ -111,6 +111,21 @@ i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data,
return chibios_to_qmk(&status);
}
i2c_status_t i2c_writeReg16(uint8_t devaddr, uint16_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout) {
i2c_address = devaddr;
i2cStart(&I2C_DRIVER, &i2cconfig);
uint8_t complete_packet[length + 2];
for (uint16_t i = 0; i < length; i++) {
complete_packet[i + 2] = data[i];
}
complete_packet[0] = regaddr >> 8;
complete_packet[1] = regaddr & 0xFF;
msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), complete_packet, length + 2, 0, 0, TIME_MS2I(timeout));
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;
i2cStart(&I2C_DRIVER, &i2cconfig);
@ -118,4 +133,12 @@ i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16
return chibios_to_qmk(&status);
}
i2c_status_t i2c_readReg16(uint8_t devaddr, uint16_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout) {
i2c_address = devaddr;
i2cStart(&I2C_DRIVER, &i2cconfig);
uint8_t register_packet[2] = {regaddr >> 8, regaddr & 0xFF};
msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), &register_packet, 2, data, length, TIME_MS2I(timeout));
return chibios_to_qmk(&status);
}
void i2c_stop(void) { i2cStop(&I2C_DRIVER); }