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use wfe instruction to enter sleep mode only if no event had occured prior. spp_and_le_counter working on STM32

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matthias.ringwald@gmail.com 2014-10-05 18:18:10 +00:00
parent 2121f530c8
commit 810505c066
1 changed files with 3 additions and 2 deletions
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5
platforms/stm32-f103rb-nucleo/main.c
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@ -93,7 +93,8 @@ void hal_cpu_enable_irqs(){
void hal_cpu_enable_irqs_and_sleep(){
hal_led_off();
__enable_irq();
__WFI();
__asm__("wfe"); // go to sleep if event flag isn't set. if set, just clear it. IRQs set event flag
// note: hal_uart_needed_during_sleep can be used to disable peripheral clock if it's not needed for a timer
// todo: the transition from disabled IRQs into sleep mode should be atomic
hal_led_on();
@ -358,7 +359,7 @@ int main(void)
hci_init(transport, (void*) &hci_uart_config_cc256x, control, remote_db);
// enable eHCILL
bt_control_cc256x_enable_ehcill(1);
// bt_control_cc256x_enable_ehcill(1);
// hand over to btstack embedded code
btstack_main();