rcsim opened a new pull request, #16779:
URL: https://github.com/apache/nuttx/pull/16779
## Summary
This commit adds support for MAX31855 and MAX6675 thermocouple sensors on
the STM32F401RC-RS485 board via SPI1. It also updates the board documentation
accordingly.
## Impact
Is new feature added? Is existing feature changed? Yes, added MAX31855 and
MAX6675 support to STM32F401RC-RS485.
Impact on user (will user need to adapt to change)? Yes, users will be able
to utilize the MAX31855 and MAX6675 on the STM32F401RC-RS485.
Impact on build (will build process change)? No
Impact on hardware (will arch(s) / board(s) / driver(s) change)? Yes,
ARM/STM32F401RC-RS485.
Impact on documentation (is update required / provided)? Yes,
STM32F401RC-RS485 was updated.
Impact on security (any sort of implications)? No.
Impact on compatibility (backward/forward/interoperability)? No
## Testing
I confirm that changes are verified on the local setup and work as intended:
Build Host(s): OS: Ubuntu 24.04, CPU: Intel i7-8850H, Compiler: GCC 13.3.0
Target(s): arch: arm, board: stm32f401rc-rs485, config: usbnsh
Configuration:
CONFIG_STM32_SPI1=y
CONFIG_SENSORS=y
CONFIG_SENSORS_MAX31855=y
CONFIG_EXAMPLES_MAX31855=y
or
CONFIG_STM32_SPI1=y
CONFIG_SENSORS=y
CONFIG_SENSORS_MAX6675=y
CONFIG_EXAMPLES_MAX31855=y (same example works for both)
Test:
NuttShell (NSH) NuttX-12.10.0
nsh> ls /dev/temp0
/dev/temp0
nsh> max31855
Unable to open file /dev/temp1
Unable to open file /dev/temp2
Unable to open file /dev/temp3
Starting...
Channel SSP0/SPI1 Device 0: Temperature = 24!
Channel SSP0/SPI1 Device 1: Not enabled!
Channel SSP1/SPI2 Device 0: Not enabled!
Channel SSP1/SPI2 Device 1: Not enabled!
Channel SSP0/SPI1 Device 0: Temperature = 25!
Channel SSP0/SPI1 Device 1: Not enabled!
Channel SSP1/SPI2 Device 0: Not enabled!
Channel SSP1/SPI2 Device 1: Not enabled!
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