stm32: STM32F031 updates (#6607)

Add support for STM32F031x6 which is the 32 KB version of the STM32F031 MCU. Add new I2C bus variant. Signed-off by: Elias Bakken <[email protected]>
KalicoCrew · May 28, 2024 · 7799a73 · 7799a73
1 parent 03ea3b1
commit 7799a73
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Showing 3 changed files with 10 additions and 4 deletions.
diff --git a/src/stm32/Kconfig b/src/stm32/Kconfig
@@ -211,8 +211,7 @@ config CLOCK_FREQ
 
 config FLASH_SIZE
     hex
-    default 0x4000 if MACH_STM32F031
-    default 0x8000 if MACH_STM32F042
+    default 0x8000 if MACH_STM32F031 || MACH_STM32F042
     default 0x20000 if MACH_STM32F070 || MACH_STM32F072
     default 0x10000 if MACH_STM32F103 || MACH_STM32L412 # Flash size of stm32f103x8 (64KiB)
     default 0x40000 if MACH_STM32F2 || MACH_STM32F401 || MACH_STM32H723

diff --git a/src/stm32/stm32f0_i2c.c b/src/stm32/stm32f0_i2c.c
@@ -22,6 +22,8 @@ struct i2c_info {
   DECL_CONSTANT_STR("BUS_PINS_i2c1_PF1_PF0", "PF1,PF0");
   DECL_ENUMERATION("i2c_bus", "i2c1_PB8_PB9", 2);
   DECL_CONSTANT_STR("BUS_PINS_i2c1_PB8_PB9", "PB8,PB9");
+  DECL_ENUMERATION("i2c_bus", "i2c1_PB8_PB7", 3);
+  DECL_CONSTANT_STR("BUS_PINS_i2c1_PB8_PB7", "PB8,PB7");
   // Deprecated "i2c1a" style mappings
   DECL_ENUMERATION("i2c_bus", "i2c1", 0);
   DECL_CONSTANT_STR("BUS_PINS_i2c1", "PB6,PB7");
@@ -93,6 +95,7 @@ static const struct i2c_info i2c_bus[] = {
     { I2C1, GPIO('B', 6), GPIO('B', 7), GPIO_FUNCTION(1) },
     { I2C1, GPIO('F', 1), GPIO('F', 0), GPIO_FUNCTION(1) },
     { I2C1, GPIO('B', 8), GPIO('B', 9), GPIO_FUNCTION(1) },
+    { I2C1, GPIO('B', 8), GPIO('B', 7), GPIO_FUNCTION(1) },
 #elif CONFIG_MACH_STM32F7
     { I2C1, GPIO('B', 6), GPIO('B', 7), GPIO_FUNCTION(1) },
 #elif CONFIG_MACH_STM32G0

diff --git a/test/configs/stm32f031.config-disabled b/test/configs/stm32f031.config-disabled
@@ -1,5 +1,9 @@
-# Base config file for STM32F031 boards
+# Base config file for STM32F031x4 (16KB) boards with serial on PA14/PA15
 CONFIG_MACH_STM32=y
 CONFIG_MACH_STM32F031=y
-CONFIG_WANT_GPIO_BITBANGING=n
+CONFIG_LOW_LEVEL_OPTIONS=y
+CONFIG_STM32_SERIAL_USART2_ALT_PA15_PA14=y
+CONFIG_STM32_CLOCK_REF_INTERNAL=y
+CONFIG_STM32_FLASH_START_0000=y
 CONFIG_WANT_DISPLAYS=n
+CONFIG_WANT_GPIO_BITBANGING=n