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Aashmika Mali

Aashmika Mali

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Participants: Aashmika Mali (HW) and Ryan Dancy (FW).

TLDR:

should be good now (smile)

will need to fix the traces and preferably add pin numbers/net names to the schematics for easier debug

Notes:

  • Handoff of validation to Aashmika from Josh

  • Ran into minicom issue where it would not update with UART communication from STM32

    • Resolution was plugging in the programmer a magical 462783294 time and seeing it blink red and update the minicom correctly

  • Cut traces to U10 for I2C and reworked using I2C pads so SDA and SCL are not switched

  • Our I2C driver was sending a start condition between the register and the data that the IO expander isn’t expecting

    • Ryan pushed a fix so that the PCA9539R register is updated as just a data byte rather than a separate write

  • We got this in the console:

    • [0] projects/smoke_pca9539r/src/main.c:96: GPIO state = 0
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 0_0 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 0_1 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 0_2 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 0_3 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 0_4 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 0_5 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 0_6 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 0_7 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 1_0 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 1_1 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 1_2 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 1_3 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 1_4 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 1_5 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 1_6 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:91: State for pin 1_7 incorrect
      [0] projects/smoke_pca9539r/src/main.c:96: GPIO state = 1
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 0_0 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 0_1 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 0_2 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 0_3 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 0_4 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 0_5 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 0_6 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 0_7 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 1_0 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 1_1 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 1_2 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 1_3 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 1_4 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 1_5 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 1_6 set and read correctly
      [0] projects/smoke_pca9539r/src/main.c:89: State for pin 1_7 set and read correctly

    • note: the one incorrect is because 3V3 was shorted to pin 1_7