X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=drivers%2Farm%2Fi2c_master.h;h=c8afa31e28d67e76cbe1a8700c5c684de8281544;hb=5fa0a274eaf6c3f2b1dbd4e6e23a4c3b884f1d44;hp=a15f1702dd30bdc945b82c89af5a9c7b393dd674;hpb=0a645225b9c863a106921185a6c2e0c340f10694;p=qmk_firmware.git

diff --git a/drivers/arm/i2c_master.h b/drivers/arm/i2c_master.h
index a15f1702d..c8afa31e2 100644
--- a/drivers/arm/i2c_master.h
+++ b/drivers/arm/i2c_master.h
@@ -22,13 +22,29 @@
  * 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>
 
-#ifndef I2C1_BANK
-    #define I2C1_BANK GPIOB
+
+#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
 #endif
+
+#ifndef I2C1_SCL_BANK
+    #define I2C1_SCL_BANK GPIOB
+#endif
+
+#ifndef I2C1_SDA_BANK
+    #define I2C1_SDA_BANK GPIOB
+#endif
+
 #ifndef I2C1_SCL
     #define I2C1_SCL 6
 #endif
@@ -36,6 +52,44 @@
     #define I2C1_SDA 7
 #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
+    #endif
+#endif
+
 #ifndef I2C_DRIVER
   #define I2C_DRIVER I2CD1
 #endif
@@ -52,5 +106,5 @@ i2c_status_t i2c_transmit(uint8_t address, const uint8_t* data, uint16_t length,
 i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);
 i2c_status_t i2c_transmit_receive(uint8_t address, uint8_t * tx_body, uint16_t tx_length, uint8_t * rx_body, uint16_t rx_length);
 i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout);
-i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t* regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
+i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
 void i2c_stop(void);