SDI lab
/
Test_burst_3
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Dependencies: mbed
Diff: main.cpp
- Revision:
- 0:f6eb2c272bbb
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Jan 22 10:26:07 2014 +0000
@@ -0,0 +1,115 @@
+#include "mbed.h"
+
+DigitalOut redLed( LED_RED ); // Led used to signal errors
+DigitalOut greenLed( LED_GREEN );
+DigitalOut spiSS( PTD0 ); // Slave select is handled by GPIO
+Serial PC (USBTX, USBRX);
+
+int main() {
+ redLed = 1;
+ greenLed = 1;
+ // Create SPI master instance, 8bit, CPOL=0, CPHA=1, 100kHz
+ SPI spiMaster( PTD2, PTD3, PTD1 ); // mosi, miso, sclk
+ spiMaster.format( 8, 1 );
+ spiMaster.frequency( 100000 );
+
+ PC.baud(115200);
+ // Deselect slave
+ spiSS = 1;
+ // Forever
+ wait(1);
+
+ while( 1 ) {
+ int rx = 0;
+ uint8_t data[256];
+ // Burst write
+ spiSS = 0;
+ spiMaster.write( '#' );
+ spiMaster.write( 0x07 ); // write RAM burst
+ spiMaster.write( 0x01 ); // AA1
+ spiMaster.write( 0x02 ); // AA2
+ spiMaster.write( 0x03 ); // AA3
+
+
+ for(int i = 0; i < 128 ; i++ )
+ {
+ spiMaster.write( 2*i ); //DD1
+ spiMaster.write( 2*i+1 ); //DD2
+
+ rx = 0;
+
+ while(rx != '@')
+ {
+ rx = spiMaster.write( 0x55 );
+ }
+
+ rx = 0;
+ }
+
+ spiMaster.write( '#' ); // fine burst
+
+ spiSS = 1;
+
+ wait(1);
+
+ spiSS = 0;
+ spiMaster.write( '#' );
+ spiMaster.write( 0x05 ); // write RAM burst
+ spiMaster.write( 0x01 ); // AA1
+ spiMaster.write( 0x02 ); // AA2
+ spiMaster.write( 0x03 ); // AA3
+
+
+ for(int i = 0; i < 128; i++ )
+ {
+ while(rx != '@')
+ {
+ rx = spiMaster.write( 0x55 );
+ }
+
+ rx = 0;
+
+ data[2*i] = spiMaster.write( 0x55 ); //DD1
+ data[2*i+1] = spiMaster.write( 0x55 ); //DD2
+
+ }
+
+ spiMaster.write( '#' ); // fine burst
+
+ spiSS = 1;
+
+ wait(1);
+
+ for(int i = 0; i < 128 ; i++)
+ {
+ PC.printf("%d..%d\r\n", data[2*i], data[2*i+1]);
+ }
+
+ //viualizza sui led i valori letti
+ for(int i = 0; i < 128; i++)
+ {
+ greenLed = 0;
+ spiSS = 0;
+ spiMaster.write( '#' );
+ spiMaster.write( 0x02 );
+ spiMaster.write( data[2*i] );
+
+ wait(0.25);
+ greenLed = 1;
+ wait(0.25);
+
+ greenLed = 0;
+ spiMaster.write( '#' );
+ spiMaster.write( 0x02 );
+ spiMaster.write( data[2*i+1] );
+ spiSS = 1;
+
+ wait(0.25);
+ greenLed = 1;
+ wait(0.25);
+
+ }
+
+ wait(5);
+ }
+}
\ No newline at end of file