Diff: main.cpp

Revision:

0:1caeae863b7f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Feb 05 21:35:42 2016 +0000
@@ -0,0 +1,59 @@
+/*
+  Hotboards eeprom Library - write_array
+ Demonstrates the use a spi eeprom. The Hotboards_eeprom
+ library works with all Microchip 25xxx serial memory series 
+ like the one presented eeprom board (http://www.hotboards.org).
+ This sketch write an array into a memory, then, read back the data 
+ and print them to a serial port.
+ 
+ The circuit:
+ *  VDD   -->  3.3v
+ *  SO    -->  PB_14
+ *  SI    -->  PB_15
+ *  SCK   -->  PB_13
+ *  CS    -->  PC_4
+ *  GND   -->  GND
+ 
+ Library  created by Diego from Hotboards
+ example added by Pedro from Hotboards
+ */
+#include "mbed.h"
+#include "Hotboards_eeprom.h"
+/*Open an instance of serial port*/
+Serial pc(USBTX,USBRX);
+/* initialize an instance of SPI bus,setting the SPI pins*/
+SPI device(PB_15,PB_14,PB_13); /* SO, SI, SCK*/
+/*initialize the library with the numbers of the interface pins*/
+Hotboards_eeprom eeprom(device,PC_4,HT_EEPROM25xx_32Kb); /* (spi,Cs,Density) */
+
+int main() 
+{
+    /*SPI transfer at 8 bits, MODE = 3*/
+    device.format(8,3);
+    /* set the spi frequency to 5MHz  */
+    device.frequency(5000000);
+    /*initialize CS pin*/
+    eeprom.init();
+    /*array to be write*/
+    uint8_t write_array[]= "[25AA320-EXAMPLE]\n";
+    /*array for read */
+    uint8_t read_array[20];
+
+    /*write the entire array starting at 0 adress*/
+    eeprom.write(0,write_array,sizeof(write_array));
+    
+    /*read back to "read_array"*/
+    eeprom.read(0,(uint8_t*)read_array,20);
+    
+    /*print adress and data to serial port*/
+    printf("ADRESS|DATA \n");
+    for(int j=0;j<17;j++)
+    {
+       printf("%2d      %c \n",j,read_array[j]); 
+    }
+    
+    while(1) 
+    {
+      /*loop*/
+    }
+}