Evaluation board, can anyone help me, please ??

ricardof · ‎2004-04-01

Posted on April 01, 2004 at 21:35

ricardof · ‎2011-05-17

Posted on May 17, 2011 at 11:59

IÂ´m working with the evaluation board M41ST87 of ST, and I want to text the line P1_0 of the uProcesador, this line is the CPU_ADC0, pin 52, if I want to output in this line one alternaty line, I have programmed the next, and is impossible to see with the osciloscoper the right signel, I donÂ´t kown why ?

P1SFS0 = 0x00; // port 1 of uP, like GPIO

P1_0 = ~P1_0; // change the line constinuosly

In the windows of the pararell port, appears the signal P1_0 changing, but with the osciloscoper in pin 52 is impossible to see it, Why ?

joseph2399 · ‎2011-05-17

Posted on May 17, 2011 at 11:59

I assume you are using a DK3300 board since the M41ST87 is a Real Time Clock chip (and is on the DK3300 board).

I suspect that you did not define port 1.0 pin function as ''GP I/O mode'' in PSDsoft when you were configuring the device. Go back to PSDsoft and define that pin as such.