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Merge pull request #1010 from betaflight/i2c_gpio 

Increase GPIO speed to 50Mhz for i2c as per @digitalentity inav
This commit is contained in:
borisbstyle 2016-08-15 20:07:05 +02:00 committed by GitHub
parent 749e61fbd8 ac7e7ee5a9
commit 7bba6de63f
2 changed files with 8 additions and 4 deletions
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8
src/main/drivers/bus_i2c_stm32f10x.c
View File

@ -53,19 +53,23 @@ static void i2cUnstick(IO_t scl, IO_t sda);
#ifndef I2C1_SDA
#define I2C1_SDA PB9
#endif
#else
#ifndef I2C1_SCL
#define I2C1_SCL PB6
#endif
#ifndef I2C1_SDA
#define I2C1_SDA PB7
#endif
#define IOCFG_I2C IO_CONFIG(GPIO_Mode_AF_OD, GPIO_Speed_50MHz)
#endif
#ifndef I2C2_SCL
#define I2C2_SCL PB10
#endif
#ifndef I2C2_SDA
#define I2C2_SDA PB11
#endif
@ -398,8 +402,8 @@ void i2cInit(I2CDevice device)
IOConfigGPIOAF(scl, IOCFG_I2C, GPIO_AF_I2C);
IOConfigGPIOAF(sda, IOCFG_I2C, GPIO_AF_I2C);
#else
IOConfigGPIO(scl, IOCFG_AF_OD);
IOConfigGPIO(sda, IOCFG_AF_OD);
IOConfigGPIO(scl, IOCFG_I2C);
IOConfigGPIO(sda, IOCFG_I2C);
#endif
I2C_DeInit(i2c->dev);

4
src/main/drivers/bus_i2c_stm32f30x.c
View File

@ -29,9 +29,9 @@
#ifndef SOFT_I2C
#if defined(USE_I2C_PULLUP)
#define IOCFG_I2C IO_CONFIG(GPIO_Mode_AF, 0, GPIO_OType_OD, GPIO_PuPd_UP)
#define IOCFG_I2C IO_CONFIG(GPIO_Mode_AF, GPIO_Speed_50MHz, GPIO_OType_OD, GPIO_PuPd_UP)
#else
#define IOCFG_I2C IOCFG_AF_OD
#define IOCFG_I2C IO_CONFIG(GPIO_Mode_AF, GPIO_Speed_50MHz, GPIO_OType_OD, GPIO_PuPd_NOPULL)
#endif
#define I2C_HIGHSPEED_TIMING 0x00500E30 // 1000 Khz, 72Mhz Clock, Analog Filter Delay ON, Setup 40, Hold 4.