Started following some tutorial on att85 usi. Downloaded example code from make avr book.

2022-09-20 01:08:01 -04:00
parent d0cbc0000e
commit 361a828c46
295 changed files with 68746 additions and 0 deletions
--- a/Examples/Chapter16_SPI/spiEEPROMDemo/spiEEPROMDemo.c
+++ b/Examples/Chapter16_SPI/spiEEPROMDemo/spiEEPROMDemo.c
@@ -0,0 +1,55 @@
+                                            /* SPI EEPROM 25LC256 Demo */
+
+// ------- Preamble -------- //
+#include <avr/io.h>
+#include <util/delay.h>
+
+#include "pinDefines.h"
+
+#include "USART.h"
+#include "25LC256.h"
+
+int main(void) {
+  uint8_t i;
+  uint8_t address;
+
+  // -------- Inits --------- //
+  initSPI();
+  initUSART();
+
+  // ------ Event loop ------ //
+  while (1) {
+    printString("\r\n====  EEPROM Memory Playground ====\r\n");
+    printString("Address  Value\r\n");
+
+    for (i = 0; i < 10; i++) {  /* print out first ten bytes of memory */
+      printString("  ");
+      printByte(i);
+      printString("     ");
+      printByte(EEPROM_readByte(i));
+      printString("\r\n");
+    }
+    printString(" [e] to erase all memory\r\n");
+    printString(" [w] to write byte to memory\r\n\r\n");
+
+    switch (receiveByte()) {                             /* take input */
+    case 'e':
+      printString("Clearing EEPROM, this could take a few seconds.\r\n");
+      EEPROM_clearAll();
+      break;
+    case 'w':
+      printString("Which memory slot would you like to write to?\r\n");
+      address = getNumber();
+      printString("\r\nWhat number would you like to store there?\r\n");
+      i = getNumber();
+      EEPROM_writeByte(address, i);
+      printString("\r\n");
+      break;
+    default:
+      printString("What??\r\n");
+    }
+
+
+  }                                                  /* End event loop */
+  return 0;                            /* This line is never reached */
+}