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authorNicolas Schodet2010-06-17 00:44:17 +0200
committerNicolas Schodet2010-06-20 19:09:38 +0200
commit9c9b1e87e7bca6ba0c5c101b0b76a514a820ea7c (patch)
tree89b791b65ca2d4f9283abe899957e792cab7c65f /src/bwbootloader/bwbootloader.c
parent35370c5301abeede6017e971a44c7b3200d40aa7 (diff)
bwbootloader: add start delay
Diffstat (limited to 'src/bwbootloader/bwbootloader.c')
-rw-r--r--src/bwbootloader/bwbootloader.c25
1 files changed, 19 insertions, 6 deletions
diff --git a/src/bwbootloader/bwbootloader.c b/src/bwbootloader/bwbootloader.c
index b7cc283..82644ca 100644
--- a/src/bwbootloader/bwbootloader.c
+++ b/src/bwbootloader/bwbootloader.c
@@ -28,21 +28,31 @@
#include "bwbootloader.h"
#include "prog.h"
+#include "timer.h"
#include <string.h>
-/** Start application when 1. */
-volatile uint8_t start;
+/** Start application when it reach zero. */
+volatile uint8_t start_delay;
+/** Stop start delay counter when 1. */
+volatile uint8_t start_delay_pause;
int
main (void)
{
twi_init (0xb8);
- while (!start)
+ timer_init ();
+ /* Handle bootloader messages. */
+ start_delay = 40;
+ while (start_delay)
+ {
twi_update ();
- /* Small delay for acknowledge. */
- utils_delay_ms (500);
+ if (!start_delay_pause && timer_overflowed ())
+ start_delay--;
+ }
+ /* Stop bootloader, start application. */
twi_uninit ();
+ timer_uninit ();
prog_start ();
return 0;
}
@@ -50,6 +60,8 @@ main (void)
void
bwbootloader_recv (const uint8_t *buffer, uint8_t size)
{
+ /* Stop start countdown. */
+ start_delay_pause = 1;
/* Command is the first byte, it will be repeated as acknowledgement.
* Words are little endian. */
static uint8_t rbuffer[AC_TWI_SLAVE_SEND_BUFFER_SIZE];
@@ -76,7 +88,8 @@ bwbootloader_recv (const uint8_t *buffer, uint8_t size)
/* Start application. */
if (size != 1)
break;
- start = 1;
+ start_delay_pause = 0;
+ start_delay = 4;
twi_slave_update (buffer, 1);
return;
case BWBOOTLOADER_READ: