Finished Programmer

Core/Inc/main.h

@@ -45,6 +45,10 @@ void Write_Command_Pins(int CE, int OE, int WE);
 void Write_Command(int addr, int data);
 int  Flash_ReadByte(int addr);
 void Enter_Device_ID(int *manufacturer, int *device);
+void Dump_Flash_UART(int visual_format);
+void Chip_Erase(void);
+void Chip_Program_Byte(int addr, int data);
+void Flash_From_UART(void);
 
 void debug_print(const char *msg);
 

Core/Src/main.c

@@ -62,16 +62,41 @@ int main(void)
   sprintf(manufacturer, "0x%02X \r\n", man_id);
   sprintf(device, "0x%02X \r\n", dev_id);
 
+  debug_print("==========================================\r\n");
   debug_print("Manufacturer ID = \r\n");
   debug_print(manufacturer);
   debug_print("Device ID = \r\n");
   debug_print(device);
-
+  debug_print("==========================================\r\n");
 
   /* Infinite loop */
   while (1)
   {
-    //debug_print("Hello from STM32!\r\n");
+    debug_print("Hello welcome to the EEPROM programmer! What would you like to do?\r\n");
+    debug_print("[1] Dump Rom as char\r\n");
+    debug_print("[2] Erase chip\r\n");
+    debug_print("[3] Program chip via UART\r\n");
+    uint8_t resp;
+    HAL_UART_Receive(&huart2, &resp, 1, HAL_MAX_DELAY);
+
+    switch (resp)
+    {
+    case 0x31:
+      debug_print("Dumping ROM...\r\n");
+      Dump_Flash_UART(1);
+      break;
+    case 0x32:
+      debug_print("Erasing Chip...\r\n");
+      Chip_Erase();
+      break;
+    case 0x33:
+      debug_print("Launching programming sequence...\r\n");
+      Flash_From_UART();
+      break;
+    default:
+      debug_print("Invalid input!\r\n");
+      break;
+    }
   }
 
 }
@@ -168,6 +193,57 @@ void Enter_Device_ID(int *manufacturer, int *device){
   Write_Command(0x5555, 0xF0); 
 }
 
+void Dump_Flash_UART(int visual_format){
+  uint8_t byte;
+  char buf[8];
+
+  for (int addr = 0; addr < 0x80000; addr++) { // 512 KB
+    byte = Flash_ReadByte(addr);
+
+    if(visual_format==0){
+      // Send as raw byte:
+      HAL_UART_Transmit(&huart2, &byte, 1, HAL_MAX_DELAY);
+    }else{
+      // Send as str
+      sprintf(buf, "%02X ", byte);
+      HAL_UART_Transmit(&huart2, (uint8_t*)buf, strlen(buf), HAL_MAX_DELAY);
+      if ((addr & 0x0F) == 0x0F) {
+        char newline[] = "\r\n";
+        HAL_UART_Transmit(&huart2, (uint8_t*)newline, 2, HAL_MAX_DELAY);
+      }
+    } 
+  }
+}
+
+void Chip_Erase(void){
+  // Erase sequence
+  Write_Command(0x5555, 0xAA);
+  Write_Command(0x2AAA, 0x55);
+  Write_Command(0x5555, 0x80);
+  Write_Command(0x5555, 0xAA);
+  Write_Command(0x2AAA, 0x55);
+  Write_Command(0x5555, 0x10);
+
+  HAL_Delay(150); // it's 100ms max but by precaution
+}
+
+void Chip_Program_Byte(int addr, int data){
+  Write_Command(0x5555, 0xAA);
+  Write_Command(0x2AAA, 0x55);
+  Write_Command(0x5555, 0xA0);
+  Write_Command(addr, data);
+}
+
+void Flash_From_UART(void){
+  debug_print("Waiting for file to flash...\r\n");
+  uint8_t byte;
+  for(int i=0; i<8; i++){
+    HAL_UART_Receive(&huart2, &byte, 1, HAL_MAX_DELAY);
+    Chip_Program_Byte(i, (int)byte);
+  }
+  debug_print("finished\r\n");
+}
+
 /**
   * @brief System Clock Configuration
   * @retval None