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Add ARM I2Cv1 support to i2c_master (#6262)

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* Add ARM I2Cv1 support to i2c_master

* Add I2Cv1 docs
This commit is contained in:
Joel Challis 2019-07-16 09:30:53 +01:00 • committed by skullydazed
parent f859375284
commit 4e375aa1f5
3 changed files with 70 additions and 25 deletions
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11
drivers/arm/i2c_master.c
View file

@ -33,11 +33,17 @@
static uint8_t i2c_address;
static const I2CConfig i2cconfig = {
#ifdef USE_I2CV1
I2C1_OPMODE,
I2C1_CLOCK_SPEED,
I2C1_DUTY_CYCLE,
#else
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) {
@ -61,8 +67,13 @@ void i2c_init(void)
chThdSleepMilliseconds(10);
#ifdef USE_I2CV1
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
//i2cInit(); //This is invoked by halInit() so no need to redo it.
}

64
drivers/arm/i2c_master.h
View file

@ -22,10 +22,16 @@
* 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
@ -46,30 +52,42 @@
#define I2C1_SDA 7
#endif
// 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
#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
// 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
// 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
#endif
#endif
#ifndef I2C_DRIVER