diff options
Diffstat (limited to 'drivers/arm/i2c_master.h')
| -rw-r--r-- | drivers/arm/i2c_master.h | 85 |
1 files changed, 51 insertions, 34 deletions
diff --git a/drivers/arm/i2c_master.h b/drivers/arm/i2c_master.h index 1bb74c800f..efe3909a66 100644 --- a/drivers/arm/i2c_master.h +++ b/drivers/arm/i2c_master.h @@ -1,9 +1,9 @@ /* Copyright 2018 Jack Humbert * Copyright 2018 Yiancar * - * This program is free sofare: you can redistribute it and/or modify + * 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 Sofare Foundation, either version 2 of the License, or + * 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, @@ -22,71 +22,88 @@ * 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. */ +#pragma once #include "ch.h" #include <hal.h> +#if defined(STM32F1XX) || defined(STM32F1xx) || defined(STM32F2xx) || defined(STM32F4xx) || defined(STM32L0xx) || defined(STM32L1xx) +# define USE_I2CV1 +#endif + #ifdef I2C1_BANK - #define I2C1_SCL_BANK I2C1_BANK - #define I2C1_SDA_BANK I2C1_BANK +# define I2C1_SCL_BANK I2C1_BANK +# define I2C1_SDA_BANK I2C1_BANK #endif #ifndef I2C1_SCL_BANK - #define I2C1_SCL_BANK GPIOB +# define I2C1_SCL_BANK GPIOB #endif #ifndef I2C1_SDA_BANK - #define I2C1_SDA_BANK GPIOB +# define I2C1_SDA_BANK GPIOB #endif #ifndef I2C1_SCL - #define I2C1_SCL 6 +# define I2C1_SCL 6 #endif #ifndef I2C1_SDA - #define I2C1_SDA 7 +# define I2C1_SDA 7 #endif +#ifdef USE_I2CV1 +# ifndef I2C1_OPMODE +# define I2C1_OPMODE OPMODE_I2C +# endif +# ifndef I2C1_CLOCK_SPEED +# define I2C1_CLOCK_SPEED 100000 /* 400000 */ +# endif +# ifndef I2C1_DUTY_CYCLE +# define I2C1_DUTY_CYCLE STD_DUTY_CYCLE /* FAST_DUTY_CYCLE_2 */ +# endif +#else // The default PAL alternate modes are used to signal that the pins are used for I2C -#ifndef I2C1_SCL_PAL_MODE - #define I2C1_SCL_PAL_MODE 4 -#endif -#ifndef I2C1_SDA_PAL_MODE - #define I2C1_SDA_PAL_MODE 4 -#endif +# ifndef I2C1_SCL_PAL_MODE +# define I2C1_SCL_PAL_MODE 4 +# endif +# ifndef I2C1_SDA_PAL_MODE +# define I2C1_SDA_PAL_MODE 4 +# endif // The default timing values below configures the I2C clock to 400khz assuming a 72Mhz clock // For more info : https://www.st.com/en/embedded-software/stsw-stm32126.html -#ifndef I2C1_TIMINGR_PRESC - #define I2C1_TIMINGR_PRESC 15U -#endif -#ifndef I2C1_TIMINGR_SCLDEL - #define I2C1_TIMINGR_SCLDEL 4U -#endif -#ifndef I2C1_TIMINGR_SDADEL - #define I2C1_TIMINGR_SDADEL 2U -#endif -#ifndef I2C1_TIMINGR_SCLH - #define I2C1_TIMINGR_SCLH 15U -#endif -#ifndef I2C1_TIMINGR_SCLL - #define I2C1_TIMINGR_SCLL 21U +# ifndef I2C1_TIMINGR_PRESC +# define I2C1_TIMINGR_PRESC 0U +# endif +# ifndef I2C1_TIMINGR_SCLDEL +# define I2C1_TIMINGR_SCLDEL 7U +# endif +# ifndef I2C1_TIMINGR_SDADEL +# define I2C1_TIMINGR_SDADEL 0U +# endif +# ifndef I2C1_TIMINGR_SCLH +# define I2C1_TIMINGR_SCLH 38U +# endif +# ifndef I2C1_TIMINGR_SCLL +# define I2C1_TIMINGR_SCLL 129U +# endif #endif #ifndef I2C_DRIVER - #define I2C_DRIVER I2CD1 +# define I2C_DRIVER I2CD1 #endif typedef int16_t i2c_status_t; #define I2C_STATUS_SUCCESS (0) -#define I2C_STATUS_ERROR (-1) +#define I2C_STATUS_ERROR (-1) #define I2C_STATUS_TIMEOUT (-2) -void i2c_init(void); +void i2c_init(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_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); +i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout); +void i2c_stop(void); |