MSPM33-SDK: Set Signal Pin

Brendon Lee

Part Number: MSPM33-SDK
Other Parts Discussed in Thread: SYSCONFIG

Hi, I would like to ask how to enable only a specific signal for a pin.

I configured I²C (UC15_0_SDA) on pin PA0, but I noticed that the red LED also lights up, even though I did not configure it in CCS. After explore the pin mapping in SysConfig, I found that the red LED is also assigned to PA0 (which I didnt configure in SysConfig)

3 months ago

0 Brendon Lee 3 months ago

Prodigy 80 points

I try to use UC1_0_SDA at pin PA28 to replace the PA0 , and the problem of the red led light up goes away, so is there any method to just like whitelist only for UC15_0_SDA in PA0?

0 Keith Barkley 3 months ago in reply to Brendon Lee

Guru 43805 points

Which example did you start with? SysConfig does not automatically set the Led at PA0, though most of the examples do. SysConfig should have signaled a resource conflict if you tried to assign another function to PA0. Here I tried to assign PA0, already assigned to the LED GPIO to I2C0_SDA:

+1 Bruce McKenney 3 months ago

Guru 102905 points

Try removing the jumper on J6; this should disconnect the LED from PA0. [ref LP User Guide (SLAU969) Table 2-1]

0 Brendon Lee 3 months ago in reply to Bruce McKenney

Prodigy 80 points

Thanks ,this has solved the problem

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MSPM33-SDK: Set Signal Pin