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
main.cpp@0:05a882783c3f, 2016-01-05 (annotated)
- Committer:
- bcostm
- Date:
- Tue Jan 05 14:11:01 2016 +0000
- Revision:
- 0:05a882783c3f
First version
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
bcostm | 0:05a882783c3f | 1 | #include "mbed.h" |
bcostm | 0:05a882783c3f | 2 | #include "EEPROM_DISCO_F469NI.h" |
bcostm | 0:05a882783c3f | 3 | |
bcostm | 0:05a882783c3f | 4 | EEPROM_DISCO_F469NI eep; |
bcostm | 0:05a882783c3f | 5 | |
bcostm | 0:05a882783c3f | 6 | DigitalOut led_green(LED1); |
bcostm | 0:05a882783c3f | 7 | DigitalOut led_red(LED2); |
bcostm | 0:05a882783c3f | 8 | |
bcostm | 0:05a882783c3f | 9 | Serial pc(USBTX, USBRX); |
bcostm | 0:05a882783c3f | 10 | |
bcostm | 0:05a882783c3f | 11 | #define BUFFER_SIZE ((uint32_t)32) |
bcostm | 0:05a882783c3f | 12 | #define WRITE_READ_ADDR ((uint32_t)0x0000) |
bcostm | 0:05a882783c3f | 13 | |
bcostm | 0:05a882783c3f | 14 | int main() |
bcostm | 0:05a882783c3f | 15 | { |
bcostm | 0:05a882783c3f | 16 | // 12345678901234567890123456789012 |
bcostm | 0:05a882783c3f | 17 | uint8_t WriteBuffer[BUFFER_SIZE+1] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ012345"; |
bcostm | 0:05a882783c3f | 18 | uint8_t ReadBuffer[BUFFER_SIZE+1]; |
bcostm | 0:05a882783c3f | 19 | uint16_t bytes_rd; |
bcostm | 0:05a882783c3f | 20 | |
bcostm | 0:05a882783c3f | 21 | pc.printf("\n\nEEPROM demo started\n"); |
bcostm | 0:05a882783c3f | 22 | led_red = 0; |
bcostm | 0:05a882783c3f | 23 | |
bcostm | 0:05a882783c3f | 24 | // Check initialization |
bcostm | 0:05a882783c3f | 25 | if (eep.Init() != EEPROM_OK) { |
bcostm | 0:05a882783c3f | 26 | led_red = 1; |
bcostm | 0:05a882783c3f | 27 | error("Initialization FAILED\n"); |
bcostm | 0:05a882783c3f | 28 | } else { |
bcostm | 0:05a882783c3f | 29 | pc.printf("Initialization PASSED\n"); |
bcostm | 0:05a882783c3f | 30 | } |
bcostm | 0:05a882783c3f | 31 | |
bcostm | 0:05a882783c3f | 32 | // Write buffer |
bcostm | 0:05a882783c3f | 33 | if (eep.WriteBuffer(WriteBuffer, WRITE_READ_ADDR, BUFFER_SIZE) != EEPROM_OK) { |
bcostm | 0:05a882783c3f | 34 | led_red = 1; |
bcostm | 0:05a882783c3f | 35 | error("Write buffer FAILED\n"); |
bcostm | 0:05a882783c3f | 36 | } else { |
bcostm | 0:05a882783c3f | 37 | pc.printf("Write buffer PASSED\n"); |
bcostm | 0:05a882783c3f | 38 | } |
bcostm | 0:05a882783c3f | 39 | |
bcostm | 0:05a882783c3f | 40 | // Read buffer |
bcostm | 0:05a882783c3f | 41 | bytes_rd = BUFFER_SIZE; |
bcostm | 0:05a882783c3f | 42 | if (eep.ReadBuffer(ReadBuffer, WRITE_READ_ADDR, &bytes_rd) != EEPROM_OK) { |
bcostm | 0:05a882783c3f | 43 | led_red = 1; |
bcostm | 0:05a882783c3f | 44 | error("Read buffer FAILED\n"); |
bcostm | 0:05a882783c3f | 45 | } else { |
bcostm | 0:05a882783c3f | 46 | ReadBuffer[BUFFER_SIZE] = '\0'; |
bcostm | 0:05a882783c3f | 47 | pc.printf("Read buffer PASSED\n"); |
bcostm | 0:05a882783c3f | 48 | pc.printf("Buffer read = [%s]\n", ReadBuffer); |
bcostm | 0:05a882783c3f | 49 | pc.printf("Bytes read = %d\n", bytes_rd); |
bcostm | 0:05a882783c3f | 50 | } |
bcostm | 0:05a882783c3f | 51 | |
bcostm | 0:05a882783c3f | 52 | while(1) { |
bcostm | 0:05a882783c3f | 53 | led_green = !led_green; |
bcostm | 0:05a882783c3f | 54 | wait(1); |
bcostm | 0:05a882783c3f | 55 | } |
bcostm | 0:05a882783c3f | 56 | } |