Hello all I have a question about the Spi interface. When I run simple code I got double clock in my oscilloscope. I want to know how I can get single clock or how I can adjust delay time between two clocks. Here is the code. Thank you, Alex #include "mbed.h" Serial pc(USBTX, USBRX); SPI spi(NC, p6, p7); //using only clock 7 and miso 6 long EncoderValue; int Encoder; Ticker ReadEncoder; void Read(){ pc.printf("Start\n"); spi.format(13,2); // Setup the spi for 13 bit data, mode 2 spi.frequency(4000000); // Create 4Mhz clock pc.printf("Start\n"); int upper = spi.write(0x00); int lower = spi.write(0x00); lower = lower >> 6; upper = (upper << 6)+lower; pc.printf("%d \r", upper); } int main() { pc.printf("Hello World!\n"); ReadEncoder.attach_us(&Read, 100000); // call flip every 100 milli-seconds while(1) { } }

Ok, fixed