diff options
| author | yulei <yuleiz@gmail.com> | 2019-12-13 09:20:04 +0800 |
|---|---|---|
| committer | Drashna Jaelre <drashna@live.com> | 2019-12-12 17:20:04 -0800 |
| commit | a037cedfdc0bdb5737586ab4b4ef7086e53029b7 (patch) | |
| tree | f80062c92eb354ea4b4281af9d95a06b23ad37f5 /drivers/arm | |
| parent | df78593b1ba800223c049f3f61df6ad4bf4abe7c (diff) | |
fixed I2C driver support for stm32f4 (#7526)
* correct i2c driver for stm32f4
* update pin mode definitions
* update macro definition
Diffstat (limited to 'drivers/arm')
| -rw-r--r-- | drivers/arm/i2c_master.c | 2 | ||||
| -rw-r--r-- | drivers/arm/i2c_master.h | 24 |
2 files changed, 16 insertions, 10 deletions
diff --git a/drivers/arm/i2c_master.c b/drivers/arm/i2c_master.c index 2a43ba2393..b9eff0ad2e 100644 --- a/drivers/arm/i2c_master.c +++ b/drivers/arm/i2c_master.c @@ -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 diff --git a/drivers/arm/i2c_master.h b/drivers/arm/i2c_master.h index efe3909a66..31cbfb9774 100644 --- a/drivers/arm/i2c_master.h +++ b/drivers/arm/i2c_master.h @@ -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 |