Dependencies:
USBDevice
mbed
Revision 0:67a2a0e8c475, committed 2016-02-25
- Comitter:
- ThomasSonderDesign
- Date:
- Thu Feb 25 00:51:18 2016 +0000
- Commit message:
- Test od programing flash over SPI
Changed in this revision
diff -r 000000000000 -r 67a2a0e8c475 USBDevice.lib
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/USBDevice.lib Thu Feb 25 00:51:18 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/USBDevice/#2af474687369
diff -r 000000000000 -r 67a2a0e8c475 mbed.bld
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld Thu Feb 25 00:51:18 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/8ed44a420e5c
\ No newline at end of file
diff -r 000000000000 -r 67a2a0e8c475 spimem.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/spimem.cpp Thu Feb 25 00:51:18 2016 +0000
@@ -0,0 +1,140 @@
+/*
+Test Writes to spi flash, all works
+
+*/
+#include "mbed.h"
+#include "USBSerial.h"
+
+
+//DigitalOut myled(LED1);
+USBSerial pc;
+//Timer t;
+
+DigitalOut cs(P0_22);
+DigitalIn button(P1_15);
+int dummy = 0;
+//Serial pc(USBTX, USBRX); // tx, rx
+
+
+
+int main()
+{
+ while(1) {
+ char c = 0;
+ while(c==0) {
+ c = pc.getc();
+ pc.printf("Waiting");
+ wait(1);
+
+ }
+
+ pc.printf("\n\rtime = ");
+ for(int i = 0; i<5; i++) {
+ pc.printf("%.d", 5-i);
+ wait(1);
+ pc.putc(8);
+ }
+ SPI my_spi(P0_9,P0_8,P0_10); // mosi, miso, sclk
+ // Chip must be deselected
+ cs = 1;
+ my_spi.format(8,3);// Setup the spi for 8 bit data, low steady state clock,
+ my_spi.frequency(10000);// second edge capture, with a 1MHz clock rate
+ /*
+ cs = 0;
+ int v1 = my_spi.write(0x05); // Send Read status reg command
+ int v2 = my_spi.write(0x1);
+ int v3 = my_spi.write(0x1);
+ pc.printf("Staus reg = %.x %.x %.x\n\r",v1, v2, v3);
+ cs = 1;
+ wait_ms(2);
+
+ cs = 0;
+ v1 = my_spi.write(0x9f); // Send Read status reg command
+ v2 = my_spi.write(0x1);
+ v3 = my_spi.write(0x1);
+ v1 = my_spi.write(0x1);
+ pc.printf("RID = %.x %.x %.x \n\r",v1, v2, v3);
+ cs = 1;
+ */
+
+
+
+ cs=1;
+
+ // while (1){//(button ==1) {
+ pc.printf("\n\rStart___________________________________\n\r");
+ //t.start();
+
+ cs = 0; // Bring chip select low to write to FeRAM
+ my_spi.write(0x06); // Send WREN command
+ cs = 1; // Bring chip select high to stop writing
+
+ // Thought I would wait a bit to get a cleaner scope trace
+ wait_us(10);
+
+ /**** START OF WRITE SEQUENCE ****/
+ for(int i = 0; i>256; i++) {
+ cs = 0; // Bring chip select low to write to FeRAM
+ my_spi.write(0x02); // Send write command
+ my_spi.write(0x00); // Send top address byte to wrtie to
+ my_spi.write(0x00); // Send Middle address byte to wrtie to
+ my_spi.write(i); // Send Bottom address byte to wrtie to
+ // Send data to be write
+ my_spi.write(i+1);
+ cs = 1;
+ wait_us(5);
+ }
+ //pc.printf("last i %.d", i);
+
+
+ /**** END OF WRITE SEQUENCE ****/
+
+ // Thought I would wait a bit again
+ wait_us(10);
+
+ /**** START OF READ SEQUENCE ****/
+ int my_val[1200]; // Variable to store the read data
+ cs = 0;
+ my_spi.write(0x03); // Send read command
+ my_spi.write(0x00); // Send top address byte to wrtie to
+ my_spi.write(0x00); // Send Middle address byte to wrtie to
+ my_spi.write(0x00); // Send Bottom address byte to wrtie to
+ //pc.printf("\n\r %.d", my_spi.write(dummy));
+
+ for(int i=0; i<256; i++) {
+ wait_us(10);
+ my_spi.write(0);
+ }
+ cs=1;
+ //t.stop();
+ //float time = t.read();
+ //pc.printf("The time taken was %f seconds\n", time);
+ /*
+ int counter = 0;
+ for(int i=0; i<1200; i++) {
+ wait_us(5);
+ pc.printf("%x",my_val[i]);
+ /*
+ if(my_val[i]>00){
+ pc.printf("#");
+ counter++;
+ }
+ else{
+ pc.printf(" ");
+ counter = 0;
+ }
+
+ if ((i%60)==0) {
+ pc.printf("\n ");
+ }
+
+ }
+
+ int val = my_spi.write(0);
+ pc.printf("\n\rDone %.x",val);
+ cs=1;
+ //}
+ }
+ */
+ }
+}