Diff: main.cpp

Revision:

0:f443b182a97a

Child:

1:17593e5a807e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Sep 19 06:03:20 2017 +0000
@@ -0,0 +1,67 @@
+#include "mbed.h"
+
+// SPI to the MRF89X.
+SPI spi(PTD2, PTD3, PTD1); // mosi, miso, sclk
+DigitalOut cs_fifo(PTC12);
+DigitalOut cs_conf(PTC17);
+DigitalIn mrf_reset(PTA16); // Hi-Z
+DigitalIn mrf_irq0(PTC16);
+DigitalIn mrf_irq1(PTC13);
+
+// RGB LED.
+PwmOut rled(LED_RED);
+PwmOut gled(LED_GREEN);
+PwmOut bled(LED_BLUE);
+
+// Local copy of MTF89X register contents.
+unsigned char regs[32];
+unsigned char regs2[32];
+
+int main() {
+    // Deselect chip select.
+    cs_fifo = 1;
+    cs_conf = 1;
+
+    // RGB: Red
+    rled = 0.5;
+    gled = 1;
+    bled = 1;
+
+    // Setup the spi for 8 bit data mode 0.
+    spi.format(8, 0);
+    spi.frequency(1000000);
+
+    // RGB: Orange
+    rled = 0.5;
+    gled = 0.5;
+    bled = 1;
+
+    // Read the MRF registers.    
+    const unsigned char start = 0x00; // Bit 0
+    const unsigned char read = 0x40; // Bit 1
+    const unsigned char stop = 0x00; // Bit t
+    cs_conf = 0;
+    for (unsigned char addr = 0; addr < 32; addr++) {
+      spi.write(start | read | (addr << 1) | stop);
+      regs[addr] = spi.write(0);
+    }
+    cs_conf = 1;
+    wait_ms(10);
+    cs_conf = 0;
+    for (unsigned char addr = 0; addr < 32; addr++) {
+      spi.write(start | read | (addr << 1) | stop);
+      regs2[addr] = spi.write(0);
+    }
+    cs_conf = 1;
+
+    // RGB: green.
+    rled = 1;
+    gled = 1;
+    bled = 1;
+    while(1) {
+        gled = 0.5;
+        wait(0.2);
+        gled = 1;
+        wait(0.2);
+    }
+}
\ No newline at end of file