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Code Activity

atusb/fw/: new request ATUSB_GPIO_CLEANUP to re-enable INT0

Browse Source 
- board.h (gpio_cleanup), board_app.c (gpio_cleanup): restore INT0
  when done manipulating GPIOs
- board.c (gpio): updated comment explaining how to restore INT0
- include/atusb/ep0.h (enum atspi_requests), ep0.c
  (ATUSB_GPIO_CLEANUP): new request to return to normal operation
  after ATUSB_GPIO
This commit is contained in:
Werner Almesberger
2011-06-20 23:11:09 -03:00
parent f8f2f890d9
commit f7b9a18917
4 changed files with 13 additions and 1 deletions
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8
atusb/fw/board_app.c
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@@ -93,7 +93,7 @@ void timer_init(void)
int gpio(uint8_t port, uint8_t data, uint8_t dir, uint8_t mask, uint8_t *res)
{
EIMSK = 0; /* must reset to recover INT_RF */
EIMSK = 0; /* recover INT_RF to ATUSB_GPIO_CLEANUP or an MCU reset */
switch (port) {
case 1:
@@ -138,6 +138,12 @@ int gpio(uint8_t port, uint8_t data, uint8_t dir, uint8_t mask, uint8_t *res)
}
void gpio_cleanup(void)
{
EIMSK = 1 << 0;
}
ISR(INT0_vect)
{
static uint8_t irq;