Diff: main.cpp

Revision:

0:2211888e98cf

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Apr 13 16:38:24 2016 +0000
@@ -0,0 +1,22 @@
+#include "mbed.h"
+Serial pc(USBTX, USBRX);          // tx, rx
+//SPI spi(D11, D12, D13);              // mosi, miso, sclk
+//DigitalOut cs(D10);                //slave select or chip select
+SPI spi(PTE18, PTE19, PTE17);              // mosi, miso, sclk
+DigitalOut cs(PTE5);                //slave select or chip select
+#define RF22_REG_00_DEVICE_TYPE                         0x00
+
+uint8_t readreg(uint8_t reg)
+{
+    int val;cs = 0;__disable_irq();spi.write(reg & ~0x80);val = spi.write(0);__enable_irq();cs = 1;return val;
+}
+int main()
+{
+    wait(1);                     // wait for POR to complete   //change the timing later
+    cs=1;                          // chip must be deselected
+    wait(1);                    //change the time later
+    spi.format(8,0);
+    spi.frequency(10000000);       //10MHz SCLK    
+    if (readreg(RF22_REG_00_DEVICE_TYPE) == 0x08) pc.printf("spi connection valid\n");
+    else pc.printf("error in spi connection\n");
+}
\ No newline at end of file