Basic example showing how to use a M24LR64 EEPROM with the STM32469I_DISCOVERY board. This EEPROM can be found on the additional ANT7-M24LR-A daughter board.

Dependencies:   BSP_DISCO_F469NI EEPROM_DISCO_F469NI mbed

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Show/hide line numbers main.cpp Source File

main.cpp

00001 #include "mbed.h"
00002 #include "EEPROM_DISCO_F469NI.h"
00003 
00004 EEPROM_DISCO_F469NI eep;
00005 
00006 DigitalOut led_green(LED1);
00007 DigitalOut led_red(LED2);
00008 
00009 Serial pc(USBTX, USBRX);
00010 
00011 #define BUFFER_SIZE         ((uint32_t)32)
00012 #define WRITE_READ_ADDR     ((uint32_t)0x0000)
00013 
00014 int main()
00015 {
00016     //                                    12345678901234567890123456789012
00017     uint8_t WriteBuffer[BUFFER_SIZE+1] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ012345";
00018     uint8_t ReadBuffer[BUFFER_SIZE+1];
00019     uint16_t bytes_rd;
00020 
00021     pc.printf("\n\nEEPROM demo started\n");
00022     led_red = 0;
00023 
00024     // Check initialization
00025     if (eep.Init() != EEPROM_OK) {
00026         led_red = 1;
00027         error("Initialization FAILED\n");
00028     } else {
00029         pc.printf("Initialization PASSED\n");
00030     }
00031 
00032     // Write buffer
00033     if (eep.WriteBuffer(WriteBuffer, WRITE_READ_ADDR, BUFFER_SIZE) != EEPROM_OK) {
00034         led_red = 1;
00035         error("Write buffer FAILED\n");
00036     } else {
00037         pc.printf("Write buffer PASSED\n");
00038     }
00039 
00040     // Read buffer
00041     bytes_rd = BUFFER_SIZE;
00042     if (eep.ReadBuffer(ReadBuffer, WRITE_READ_ADDR, &bytes_rd) != EEPROM_OK) {
00043         led_red = 1;
00044         error("Read buffer FAILED\n");
00045     } else {
00046         ReadBuffer[BUFFER_SIZE] = '\0';
00047         pc.printf("Read buffer PASSED\n");
00048         pc.printf("Buffer read = [%s]\n", ReadBuffer);
00049         pc.printf("Bytes read = %d\n", bytes_rd);
00050     }
00051 
00052     while(1) {
00053         led_green = !led_green;
00054         wait(1);
00055     }
00056 }