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Refining implementation of ticker APIs

pull/1214/head
vimalrajr 2015-06-22 15:31:49 +05:30 committed by Karthik Purushothaman
parent 8a68139cf0
commit 98d628b67f
1 changed files with 9 additions and 8 deletions
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17
libraries/mbed/targets/hal/TARGET_Atmel/TARGET_SAM21/us_ticker.c
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@ -27,6 +27,7 @@
#define TICKER_COUNTER_Handlr TC4_Handler
static int us_ticker_inited = 0;
extern uint8_t g_sys_init;
struct tc_module us_ticker_module;
@ -70,6 +71,10 @@ void us_ticker_init(void)
if (us_ticker_inited) return;
us_ticker_inited = 1;
if (g_sys_init == 0) {
system_init();
g_sys_init = 1;
}
tc_get_config_defaults(&config_tc);
@ -95,9 +100,7 @@ void us_ticker_init(void)
config_tc.counter_size = TC_COUNTER_SIZE_32BIT;
config_tc.run_in_standby = true;
config_tc.counter_32_bit.value = 0;
config_tc.counter_32_bit.compare_capture_channel[0] = 0xFFFFFFFF;
//config_tc.oneshot = true;
config_tc.counter_32_bit.compare_capture_channel[TC_COMPARE_CAPTURE_CHANNEL_0] = 0xFFFFFFFF;
/* Initialize the timer */
ret_status = tc_init(&us_ticker_module, TICKER_COUNTER_uS, &config_tc);
@ -131,17 +134,15 @@ void us_ticker_set_interrupt(timestamp_t timestamp)
us_ticker_irq_handler();
return;
}
tc_set_compare_value(&us_ticker_module, TC_CALLBACK_CC_CHANNEL0, timestamp);
NVIC_DisableIRQ(TICKER_COUNTER_IRQn);
NVIC_SetVector(TICKER_COUNTER_IRQn, (uint32_t)TICKER_COUNTER_Handlr);
NVIC_EnableIRQ(TICKER_COUNTER_IRQn);
/* Enable the callback */
tc_enable_callback(&us_ticker_module, TC_CALLBACK_CC_CHANNEL0);
tc_set_compare_value(&us_ticker_module, TC_COMPARE_CAPTURE_CHANNEL_0, (uint32_t)timestamp);
/* Enable the timer module */
//tc_enable(&us_ticker_module);
NVIC_EnableIRQ(TICKER_COUNTER_IRQn);
}
void us_ticker_disable_interrupt(void) {