first working version of incremental upload

avr/usbload/main.c

@@ -73,7 +73,7 @@ uint8_t tx_buffer[32];
 uint8_t data_buffer[4];
 uint32_t addr;
 uint16_t crc = 0;
-
+uint8_t loader_enabled = 1;
 
 
 
@@ -130,9 +130,9 @@ usbMsgLen_t usbFunctionSetup(uchar data[8])
             req_bank++;
             timer_start();
 
-        } else {
-            sram_bulk_write_start(req_addr);
         }
+        sram_bulk_write_start(req_addr);
+
         ret_len = USB_MAX_TRANS;
 
         /*
@@ -239,6 +239,11 @@ usbMsgLen_t usbFunctionSetup(uchar data[8])
         tx_buffer[1] = (crc >> 8) & 0xff;
         ret_len = 2;
         req_state = REQ_STATUS_IDLE;
+        
+        
+    } else if (rq->bRequest == USB_SET_LAODER) {
+        loader_enabled = rq->wValue.word;
+        ret_len = 0;
     }
 
     usbMsgPtr = data_buffer;
@@ -371,7 +376,14 @@ int main(void)
         
         shared_memory_init();
         irq_init();
-        boot_startup_rom(500);
+        
+        if(loader_enabled)
+            boot_startup_rom(500);
+        else
+        {
+            avr_bus_active();
+            send_reset();
+        }
         
         
     }

avr/usbload/requests.h

@@ -38,5 +38,6 @@
 #define USB_MODE_SNES           10
 #define USB_MODE_AVR            11
 #define USB_AVR_RESET           12
+#define USB_SET_LAODER          13
 
 #endif /* __REQUESTS_H_INCLUDED__ */

avr/usbload/sram.c

@@ -228,8 +228,6 @@ void sram_bulk_write_start(uint32_t addr)
 
     sreg_set(addr);
 
-    AVR_WR_PORT &= ~(1 << AVR_WR_PIN);
-
 }
 
 inline void sram_bulk_write_next(void)
@@ -237,11 +235,11 @@ inline void sram_bulk_write_next(void)
     addr_current++;
     AVR_WR_PORT |= (1 << AVR_WR_PIN);
     counter_up();
-    AVR_WR_PORT &= ~(1 << AVR_WR_PIN);
 }
 
 inline void sram_bulk_write( uint8_t data)
 {
+    AVR_WR_PORT &= ~(1 << AVR_WR_PIN);
     AVR_DATA_PORT = data;
 }