Hello
I used the gpio to do the spi's work .If i used the pin to control the led, pin hight sleep(1) and low sleep(1). That's ok
But change sleep(1) by usleep(1). The wave is very bad .
I do this on linux user space .Use the mmap() remap address .
Configure the pinmux first. And read the clock is right 0x8003,read the psc1->mdctl[3]=3
gpio_init(){ set dir is output} pin hight is set OUT_DATA|=0X00000001 low is set OUT_DATA&=~0X00000001;
Waiting for reply....
Thanks!