root / trunk / code / projects / test / test_eeprom.c @ 1463
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/** @file testeeprom.c
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* @brief tests the eeprom code
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*
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* stores and retrives a value, then sets it back to what it was
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*/
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#include <dragonfly_lib.h> |
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#include "eeprom.h" |
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#define ADDR 0 |
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int testeeprom(void) { |
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unsigned char data, data2; |
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int ret;
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int worked=1; |
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/* read whats there */
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ret = eeprom_get_byte(ADDR, &data); |
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if(ret) {
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usb_puts("Error reading intial value! return code: ");
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usb_puti(ret); |
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usb_puts(" data: ");
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usb_puti(data); |
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usb_puts("\r\n");
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worked=0;
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} |
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else {
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usb_puts("data was: ");
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usb_puti(data); |
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usb_puts("\r\n");
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} |
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/* write something new */
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ret = eeprom_put_byte(ADDR, 123);
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if(ret) {
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usb_puts("Error writing data! return code: ");
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usb_puti(ret); |
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usb_puts("\r\n");
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worked=0;
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} |
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else {
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usb_puts("wrote 123\r\n");
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} |
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/* check if tis really there */
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ret = eeprom_get_byte(ADDR, &data2); |
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if(ret) {
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usb_puts("Error reading second value! return code: ");
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usb_puti(ret); |
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usb_puts(" data: ");
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usb_puti(data2); |
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usb_puts("\r\n");
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worked=0;
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} |
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else {
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if(data2==123) { |
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usb_puts("data write and re-read worked!\r\n");
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} |
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else {
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usb_puts("data re-read returned 0 but data was ");
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usb_puti(data2); |
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usb_puts("\r\n");
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worked=0;
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} |
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} |
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/* restore old value */
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ret = eeprom_put_byte(ADDR, 123);
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if(ret) {
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usb_puts("Error writing data the second time! return code: ");
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usb_puti(ret); |
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usb_puts("\r\n");
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worked=0;
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} |
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else {
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usb_puts("re-wrote original data: ");
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usb_puti(data); |
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usb_puts("\r\n");
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} |
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return worked;
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} |