USBasp 2006.09.16.

[pub/USBasp.git] / firmware / main.c

diff --git a/firmware/main.c b/firmware/main.c
index c5624d3..a01cfe8 100644 (file)
--- a/firmware/main.c
+++ b/firmware/main.c
@@ -214,9 +214,18 @@ uchar usbFunctionWrite(uchar *data, uchar len) {
 
 int main(void)
 {
 
 int main(void)
 {

+  uchar   i, j;
+

   PORTD = 0;
   PORTB = 0;           /* no pullups on USB and ISP pins */
   DDRD = ~(1 << 2);    /* all outputs except PD2 = INT0 */
   PORTD = 0;
   PORTB = 0;           /* no pullups on USB and ISP pins */
   DDRD = ~(1 << 2);    /* all outputs except PD2 = INT0 */

+
+  DDRB = ~0;            /* output SE0 for USB reset */
+  j = 0;
+  while(--j){           /* USB Reset by device only required on Watchdog Reset */
+      i = 0;
+      while(--i);       /* delay >10ms for USB reset */
+  }

   DDRB = 0;             /* all USB and ISP pins inputs */
 
   DDRC = 0x03;          /* all inputs except PC0, PC1 */
   DDRB = 0;             /* all USB and ISP pins inputs */
 
   DDRC = 0x03;          /* all inputs except PC0, PC1 */