Changeset 0262b6e in avrstuff

Timestamp:

Sep 4, 2012, 6:44:04 PM (12 years ago)

Author:

Adrien Destugues <pulkomandy@…>

Branches:

main

Children:

87456c1

Parents:

41d46ae

Message:

Move PIC init earlier in boot sequence since we don't control VCC line !
The pic starts at the same time as the AVR and we have to enter it in reset state as fast as possible.

git-svn-id: ​svn://pulkomandy.tk/avrstuff@69 c6672c3c-f6b6-47f9-9001-1fd6b12fecbe

File:

• V-USB_Dev/firmwares/herePic/main.c (modified) (2 diffs)

V-USB_Dev/firmwares/herePic/main.c

@@ -45 +45 @@
 
 int main() {
+        // Enter Low Voltage ICSP mode on the PIC
+        PORTB &= ~(VPP|PGM|PGD|PGC); // Start with all pins low
+        DDRB |= VPP|PGM|PGD|PGC;        // set them as outputs
+        _delay_us(5); // Wait for some time
+        PORTB |= PGM | VPP; // Enter low voltage programming mode
+
         // Init
         wdt_enable(WDTO_2S);
@@ -51 +57 @@
         usbInit();
         sei();
-
-        // Enter Low Voltage ICSP mode on the PIC
-        PORTB &= ~(VPP|PGM|PGD|PGC); // Start with all pin low
-        DDRB |= VPP|PGM|PGD|PGC;        // set them as outputs
-        _delay_us(4); // Wait for some time
-        PORTB |= PGM; // Enable low voltage programming
-        PORTB |= VPP; // Enter programming mode
 
         // Configure leds