diff options
Diffstat (limited to 'drivers/arm/i2c_master.c')
| -rw-r--r-- | drivers/arm/i2c_master.c | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/drivers/arm/i2c_master.c b/drivers/arm/i2c_master.c deleted file mode 100644 index ede915fa4a..0000000000 --- a/drivers/arm/i2c_master.c +++ /dev/null @@ -1,114 +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 = { -#ifdef 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) { - // 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, PAL_MODE_STM32_ALTERNATE_OPENDRAIN); - palSetPadMode(I2C1_SDA_BANK, I2C1_SDA, PAL_MODE_STM32_ALTERNATE_OPENDRAIN); -#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); } |