4-Pin Trace with STM32F2 / STM32F4
To enable 4-Pin Trace with STM32F429 device:
Configure required pins for trace output
1. Create a file for the device:
/*------------------------------------------------------------------- ** Define the function to enable the trace port **-----------------------------------------------------------------*/ FUNC void EnableTPIU(void) { _WDWORD(0x40023830, 0x00000010); //Enable GPIOE clock _WDWORD(0x40021000, 0x00002AA0); //Configure PE2, PE3, PE4, PE5, and PE6 as AF _WDWORD(0xE0042004, 0x000000E0); // Set 4-pin tracing via DBGMCU_CR } /*------------------------------------------------------------------- ** Invoke the function at debugger startup **-----------------------------------------------------------------*/ EnableTPIU();
2. Set the file as initialization file