diff options
Diffstat (limited to 'drivers/chibios/i2c_master.c')
| -rw-r--r-- | drivers/chibios/i2c_master.c | 121 | 
1 files changed, 0 insertions, 121 deletions
diff --git a/drivers/chibios/i2c_master.c b/drivers/chibios/i2c_master.c deleted file mode 100644 index fc4bb2ab37..0000000000 --- a/drivers/chibios/i2c_master.c +++ /dev/null @@ -1,121 +0,0 @@ -/* Copyright 2018 Jack Humbert - * Copyright 2018 Yiancar - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program.  If not, see <http://www.gnu.org/licenses/>. - */ - -/* This library is only valid for STM32 processors. - * This library follows the convention of the AVR i2c_master library. - * As a result addresses are expected to be already shifted (addr << 1). - * I2CD1 is the default driver which corresponds to pins B6 and B7. This - * can be changed. - * Please ensure that HAL_USE_I2C is TRUE in the halconf.h file and that - * STM32_I2C_USE_I2C1 is TRUE in the mcuconf.h file. Pins B6 and B7 are used - * but using any other I2C pins should be trivial. - */ -#include "quantum.h" -#include "i2c_master.h" -#include <string.h> -#include <hal.h> - -static uint8_t i2c_address; - -static const I2CConfig i2cconfig = { -#if defined(USE_I2CV1_CONTRIB) -    I2C1_CLOCK_SPEED, -#elif defined(USE_I2CV1) -    I2C1_OPMODE, -    I2C1_CLOCK_SPEED, -    I2C1_DUTY_CYCLE, -#else -    // This configures the I2C clock to 400khz assuming a 72Mhz clock -    // For more info : https://www.st.com/en/embedded-software/stsw-stm32126.html -    STM32_TIMINGR_PRESC(I2C1_TIMINGR_PRESC) | STM32_TIMINGR_SCLDEL(I2C1_TIMINGR_SCLDEL) | STM32_TIMINGR_SDADEL(I2C1_TIMINGR_SDADEL) | STM32_TIMINGR_SCLH(I2C1_TIMINGR_SCLH) | STM32_TIMINGR_SCLL(I2C1_TIMINGR_SCLL), 0, 0 -#endif -}; - -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) { -    static bool is_initialised = false; -    if (!is_initialised) { -        is_initialised = true; - -        // Try releasing special pins for a short time -        palSetPadMode(I2C1_SCL_BANK, I2C1_SCL, PAL_MODE_INPUT); -        palSetPadMode(I2C1_SDA_BANK, I2C1_SDA, PAL_MODE_INPUT); - -        chThdSleepMilliseconds(10); -#if defined(USE_GPIOV1) -        palSetPadMode(I2C1_SCL_BANK, I2C1_SCL, I2C1_SCL_PAL_MODE); -        palSetPadMode(I2C1_SDA_BANK, I2C1_SDA, I2C1_SDA_PAL_MODE); -#else -        palSetPadMode(I2C1_SCL_BANK, I2C1_SCL, PAL_MODE_ALTERNATE(I2C1_SCL_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN); -        palSetPadMode(I2C1_SDA_BANK, I2C1_SDA, PAL_MODE_ALTERNATE(I2C1_SDA_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN); -#endif -    } -} - -i2c_status_t i2c_start(uint8_t address) { -    i2c_address = address; -    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; -    i2cStart(&I2C_DRIVER, &i2cconfig); -    msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, 0, 0, TIME_MS2I(timeout)); -    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; -    i2cStart(&I2C_DRIVER, &i2cconfig); -    msg_t status = i2cMasterReceiveTimeout(&I2C_DRIVER, (i2c_address >> 1), data, length, TIME_MS2I(timeout)); -    return chibios_to_qmk(&status); -} - -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); - -    uint8_t complete_packet[length + 1]; -    for (uint8_t i = 0; i < length; i++) { -        complete_packet[i + 1] = data[i]; -    } -    complete_packet[0] = regaddr; - -    msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), complete_packet, length + 1, 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); -    msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), ®addr, 1, data, length, TIME_MS2I(timeout)); -    return chibios_to_qmk(&status); -} - -void i2c_stop(void) { i2cStop(&I2C_DRIVER); }  | 
