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fixed I2C driver support for stm32f4 (#7526) 

* correct i2c driver for stm32f4

* update pin mode definitions

* update macro definition
master
yulei 2019-12-13 09:20:04 +08:00 committed by Drashna Jaelre
parent df78593b1b
commit a037cedfdc
2 changed files with 16 additions and 10 deletions
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2
drivers/arm/i2c_master.c
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@ -62,7 +62,7 @@ __attribute__((weak)) void i2c_init(void) {
palSetPadMode(I2C1_SDA_BANK, I2C1_SDA, PAL_MODE_INPUT);
chThdSleepMilliseconds(10);
#ifdef USE_I2CV1
#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

24
drivers/arm/i2c_master.h
View File

@ -27,7 +27,7 @@
#include "ch.h"
#include <hal.h>
#if defined(STM32F1XX) || defined(STM32F1xx) || defined(STM32F2xx) || defined(STM32F4xx) || defined(STM32L0xx) || defined(STM32L1xx)
#if defined(STM32F1XX) || defined(STM32F1xx) || defined(STM32F2xx) || defined(STM32F4xx) || defined(STM32F4XX) || defined(STM32L0xx) || defined(STM32L1xx)
# define USE_I2CV1
#endif
@ -51,6 +51,20 @@
# define I2C1_SDA 7
#endif
#if defined(STM32F1XX) || defined(STM32F1xx)
# define USE_GPIOV1
#endif
#ifndef USE_GPIOV1
// 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
#endif
#ifdef USE_I2CV1
# ifndef I2C1_OPMODE
# define I2C1_OPMODE OPMODE_I2C
@ -62,14 +76,6 @@
# 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
// 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