Diff: main.cpp

Revision:

0:5b0e70b88863

Child:

1:e642eed3eac4

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu May 02 01:25:37 2013 +0000
@@ -0,0 +1,84 @@
+#include "sx1232.h"
+
+/* Chat application over text console via SerialPC.
+ * Tested with teraterm.
+ */
+
+// pins for freescale freedom:
+//           mosi, miso, sclk,   cs,  rst, dio0
+SX1232 radio(PTD2, PTD3, PTD1, PTD0, PTD5, PTA13);
+
+Serial pc(USBTX, USBRX);
+
+void radio_init_user()
+{    
+    // default narrow-band settings
+    radio.set_bitrate(4800);
+    radio.set_tx_fdev_hz(5000); //   tx deviation
+    radio.set_rx_dcc_bw_hz(0, 10000);  // rx bandwidth  
+    radio.enable_afc(1);
+    
+   // pick your own frequency within your regulatory limits.
+    radio.set_frf_MHz(914.1);
+    
+    /* radio.RegPaConfig.bits.OutputPower = X
+     * radio.RegPaConfig.bits.PaSelect = 1 PA_BOOST
+     * radio.write_reg(REG_PACONFIG, RegPaConfig.octet); */
+}
+
+void
+service_radio()
+{
+    int len;
+
+    switch (radio.service_action) {
+        case SERVICE_READ_FIFO:  // this occurs when CrcOk in DIO1 pin from radio
+            radio.service_action = SERVICE_NONE;
+            len = radio.read_fifo();
+            radio.rx_buf[len] = 0; // null terminate for printing text
+            printf("%s\r\n", radio.rx_buf);
+            break;
+        case SERVICE_ERROR:
+            radio.service_action = SERVICE_NONE;
+            printf("dio0_callback() %d\r\n", radio.RegDioMapping1.bits.Dio0Mapping);
+            break;
+        case SERVICE_TX_DONE:
+            radio.service_action = SERVICE_NONE;
+            radio.start_rx();
+            break;
+        default: // nothing necessary to do
+            break;
+    } // ...switch (radio.service_action)            
+}
+        
+int main()
+{
+    int txbuf_idx = 0;
+    const int maxmsg = sizeof(radio.tx_buf)-1;
+    
+    radio_init_user();
+    radio.start_rx();
+    
+    printf("\r\nsx1232_chat\r\n");
+    while (1) {
+        if (pc.readable()) {
+            char c = pc.getc();
+            if (c == 8 && txbuf_idx > 0) { // backspace
+                pc.putc(8);
+                pc.putc(' ');
+                pc.putc(8);
+                txbuf_idx--;
+            } else if (c == '\r') {
+                //radio.tx_buf[txbuf_idx] = 0; // null terminate (if printing)
+                radio.start_tx(txbuf_idx);
+                printf("\r\n");
+                txbuf_idx = 0;
+            } else if (txbuf_idx < maxmsg) {
+                radio.tx_buf[txbuf_idx++] = c;
+                pc.putc(c);
+            }
+        } else
+            service_radio();
+    } // ...while(1)
+
+}