SparkFun Forums

[cdwilson]

Quick update on support for the STM32 MicroMod board. The PR mentioned above was merged in https://github.com/micropython/micropyt ... ffbd37a6d3 so you should now be able to build & deploy the firmware for this board by checking out the micropython repo and running:

Code: Select all

make -C ports/stm32/ BOARD=SPARKFUN_MICROMOD_STM32 deploy

.

I also pushed up a work-in-progress PR for CircuitPython support at https://github.com/adafruit/circuitpython/pull/5060. You should be able to test it out by checking out that PR and running:

Code: Select all

make -C ports/stm/ BOARD=sparkfun_stm32f405_micromod flash

[Sterny72]

Hi CDWilson,

Thanks for developing this port.

I was able to build it and install it on a board. However, I'm having issues getting I2C working with various carrier boards.

Can you tell me if you're able to do a basic scan against any generic QWIIC I2C sensors?

I checked the pinout diagrams, and mpconfigboard.h and pins.csv looks like they match the schematic.

Thanks for reading!

[cdwilson]

I think I accidentally swapped the I2C1 vs. I2C2 peripheral assignments... Let me know if this patch fixes the issue and I'll work on getting a PR submitted.

Code: Select all

diff --git a/ports/stm32/boards/SPARKFUN_MICROMOD_STM32/mpconfigboard.h b/ports/stm32/boards/SPARKFUN_MICROMOD_STM32/mpconfigboard.h
index 0c451a4db..dc7b7b32e 100644
--- a/ports/stm32/boards/SPARKFUN_MICROMOD_STM32/mpconfigboard.h
+++ b/ports/stm32/boards/SPARKFUN_MICROMOD_STM32/mpconfigboard.h
@@ -73,15 +73,15 @@ extern struct _spi_bdev_t spi_bdev;
 #define MICROPY_HW_CAN1_TX (pin_B9)
 #define MICROPY_HW_CAN1_RX (pin_B8)
 
-// I2C1 config (MicroMod I2C)
-#define MICROPY_HW_I2C1_NAME "I2C"
-#define MICROPY_HW_I2C1_SCL (pin_B10)
-#define MICROPY_HW_I2C1_SDA (pin_B11)
-
-// I2C2 config (MicroMod I2C1)
-#define MICROPY_HW_I2C2_NAME "I2C1"
-#define MICROPY_HW_I2C2_SCL (pin_B6)
-#define MICROPY_HW_I2C2_SDA (pin_B7)
+// I2C2 config (MicroMod I2C)
+#define MICROPY_HW_I2C2_NAME "I2C"
+#define MICROPY_HW_I2C2_SCL (pin_B10)
+#define MICROPY_HW_I2C2_SDA (pin_B11)
+
+// I2C1 config (MicroMod I2C1)
+#define MICROPY_HW_I2C1_NAME "I2C1"
+#define MICROPY_HW_I2C1_SCL (pin_B6)
+#define MICROPY_HW_I2C1_SDA (pin_B7)
 
 // SPI1 config (MicroMod SPI)
 #define MICROPY_HW_SPI1_NAME "SPI"

[Sterny72]

I think I accidentally swapped the I2C1 vs. I2C2 peripheral assignments... Let me know if this patch fixes the issue and I'll work on getting a PR submitted.

Hi Chris,

Thanks again for this - I can confirm the fix allowed me two scan using my SFE ATP carrier board on both buses connected to a Qwiic board.

>>> from machine import I2C
>>> i2c = I2C(1)
>>> i2c.scan()
[35]
>>> i2c2 = I2C(2)
>>> i2c2.scan()
[73]

[cdwilson]

FYI, here's a link to the PR: https://github.com/micropython/micropython/pull/8372

[cdwilson]

Quick update: the MicroPython PR to fix the I2C and UART peripherals for the STM32 MicroMod was merged today (see https://github.com/micropython/micropython/pull/8372)

Please let me know if you come across any other issues using MicroPython on this board.