Add ARM I2Cv1 support to i2c_master (#6262)
* Add ARM I2Cv1 support to i2c_master * Add I2Cv1 docs
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3 changed files with 70 additions and 25 deletions
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@ -22,10 +22,16 @@
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* Please ensure that HAL_USE_I2C is TRUE in the halconf.h file and that
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* STM32_I2C_USE_I2C1 is TRUE in the mcuconf.h file.
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*/
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#pragma once
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#include "ch.h"
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#include <hal.h>
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#if defined(STM32F1XX) || defined(STM32F1xx) || defined(STM32F2xx) || defined(STM32F4xx) || defined(STM32L0xx) || defined(STM32L1xx)
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#define USE_I2CV1
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#endif
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#ifdef I2C1_BANK
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#define I2C1_SCL_BANK I2C1_BANK
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#define I2C1_SDA_BANK I2C1_BANK
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@ -46,30 +52,42 @@
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#define I2C1_SDA 7
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#endif
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// The default PAL alternate modes are used to signal that the pins are used for I2C
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#ifndef I2C1_SCL_PAL_MODE
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#define I2C1_SCL_PAL_MODE 4
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#endif
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#ifndef I2C1_SDA_PAL_MODE
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#define I2C1_SDA_PAL_MODE 4
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#endif
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#ifdef USE_I2CV1
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#ifndef I2C1_OPMODE
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#define I2C1_OPMODE OPMODE_I2C
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#endif
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#ifndef I2C1_CLOCK_SPEED
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#define I2C1_CLOCK_SPEED 100000 /* 400000 */
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#endif
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#ifndef I2C1_DUTY_CYCLE
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#define I2C1_DUTY_CYCLE STD_DUTY_CYCLE /* FAST_DUTY_CYCLE_2 */
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#endif
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#else
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// The default PAL alternate modes are used to signal that the pins are used for I2C
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#ifndef I2C1_SCL_PAL_MODE
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#define I2C1_SCL_PAL_MODE 4
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#endif
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#ifndef I2C1_SDA_PAL_MODE
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#define I2C1_SDA_PAL_MODE 4
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#endif
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// The default timing values below configures the I2C clock to 400khz assuming a 72Mhz clock
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// For more info : https://www.st.com/en/embedded-software/stsw-stm32126.html
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#ifndef I2C1_TIMINGR_PRESC
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#define I2C1_TIMINGR_PRESC 15U
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#endif
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#ifndef I2C1_TIMINGR_SCLDEL
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#define I2C1_TIMINGR_SCLDEL 4U
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#endif
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#ifndef I2C1_TIMINGR_SDADEL
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#define I2C1_TIMINGR_SDADEL 2U
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#endif
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#ifndef I2C1_TIMINGR_SCLH
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#define I2C1_TIMINGR_SCLH 15U
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#endif
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#ifndef I2C1_TIMINGR_SCLL
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#define I2C1_TIMINGR_SCLL 21U
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// The default timing values below configures the I2C clock to 400khz assuming a 72Mhz clock
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// For more info : https://www.st.com/en/embedded-software/stsw-stm32126.html
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#ifndef I2C1_TIMINGR_PRESC
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#define I2C1_TIMINGR_PRESC 15U
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#endif
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#ifndef I2C1_TIMINGR_SCLDEL
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#define I2C1_TIMINGR_SCLDEL 4U
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#endif
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#ifndef I2C1_TIMINGR_SDADEL
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#define I2C1_TIMINGR_SDADEL 2U
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#endif
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#ifndef I2C1_TIMINGR_SCLH
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#define I2C1_TIMINGR_SCLH 15U
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#endif
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#ifndef I2C1_TIMINGR_SCLL
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#define I2C1_TIMINGR_SCLL 21U
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#endif
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#endif
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#ifndef I2C_DRIVER
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