ENPRA_Foot
/
Nucleo_spi_master
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Dependencies: mbed
Diff: main.cpp
- Revision:
- 0:241cea911735
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Nov 19 05:26:08 2018 +0000
@@ -0,0 +1,43 @@
+#include "mbed.h"
+
+SPI spi(PB_5, PB_4, PB_3); // mosi, miso, sclk
+DigitalOut cs(PA_1);
+Serial pc(USBTX, USBRX);
+DigitalOut led(LED1);
+
+#define DTIME 0.005
+
+int main()
+{
+ cs = 1;
+ spi.format(8,0);
+ spi.frequency(1000000);
+ led = 0;
+
+ while(1) {
+ led = 1;
+ cs=0;
+ wait(DTIME);
+ int byte_1 = spi.write(0x03);
+ pc.printf("byte_1: %d ",byte_1);
+ cs=1;
+
+ cs=0;
+ wait(DTIME);
+ int byte_2 = spi.write(0xFF);
+ pc.printf("byte_2: %d ",byte_2);
+ cs=1;
+
+ cs=0;
+ wait(DTIME);
+ int byte_waste = spi.write(0xFF);
+ cs=1;
+
+ int rbyte = (byte_1<<8)+byte_2;
+ pc.printf("rbyte: %d\r\n",rbyte);
+ led = 0;
+
+ wait(0.05);
+ }
+
+}
\ No newline at end of file