On Tue, 6 Jan 2004, Jean Delvare wrote: > OK, I got some code from the Gatos project. I took i2c-savage4 and > edited it in accordance with what I found there, but I can't get it to > work. If anyone could take a look and tell me where I'm wrong... The GPIO pins could be bidirectional, but one way at a time. Meaning, the read value _GPIO_Y_0 is not valid when _GPIO_EN_0 is set. Also, I did not find _GPIO_A_0 (nor _1) initialised to 0 in your code. I believe this is the value ( 0 = pull low, 1 = hi-Z ) when _GPIO_EN_0 is set. Makes sense with the inverted setscl&sda. Did you try without bit_test? You might need some <1 us delay between read and write to see the change, the bus has some capacitance even without monitor cable. -- Ky?sti M?lkki <kyosti.malkki at welho.com>
