Hotboards MX
This sketch write an array into a memory, then, read back the data and print them to a serial port.
Dependencies: Hotboards_eeprom mbed
Revision 0:1caeae863b7f, committed 2016-02-05
- Comitter:
- Hotboards
- Date:
- Fri Feb 05 21:35:42 2016 +0000
- Commit message:
- first Release: Hotboards_eeprom_write_array
Changed in this revision
diff -r 000000000000 -r 1caeae863b7f Hotboards_eeprom.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Hotboards_eeprom.lib Fri Feb 05 21:35:42 2016 +0000 @@ -0,0 +1,1 @@ +https://developer.mbed.org/users/Hotboards/code/Hotboards_eeprom/#38fad00cc45b
diff -r 000000000000 -r 1caeae863b7f main.cpp
--- /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*/
+ }
+}
diff -r 000000000000 -r 1caeae863b7f mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Fri Feb 05 21:35:42 2016 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/f141b2784e32 \ No newline at end of file