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author | Jun Wako <wakojun@gmail.com> | 2015-04-24 16:26:14 +0900 |
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committer | Jun Wako <wakojun@gmail.com> | 2015-04-24 16:26:14 +0900 |
commit | a3d96d3aa96318d339a67de1085e0ae495d57c84 (patch) | |
tree | db85c16d03b52399d6c109eda7ea0341a0de0b1d /tmk_core/tool/mbed/mbed-sdk/libraries/tests/KL25Z/pit | |
parent | 1d5bac21dc6f1425b8ef4bbe7935330c37c3a93e (diff) | |
parent | 1fe4406f374291ab2e86e95a97341fd9c475fcb8 (diff) |
Merge commit '1fe4406f374291ab2e86e95a97341fd9c475fcb8'
Diffstat (limited to 'tmk_core/tool/mbed/mbed-sdk/libraries/tests/KL25Z/pit')
-rw-r--r-- | tmk_core/tool/mbed/mbed-sdk/libraries/tests/KL25Z/pit/main.cpp | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/tests/KL25Z/pit/main.cpp b/tmk_core/tool/mbed/mbed-sdk/libraries/tests/KL25Z/pit/main.cpp new file mode 100644 index 0000000000..3b13af2730 --- /dev/null +++ b/tmk_core/tool/mbed/mbed-sdk/libraries/tests/KL25Z/pit/main.cpp @@ -0,0 +1,48 @@ +#include "mbed.h" + +extern "C" { +volatile uint32_t msTicks; + +void SysTick_Handler(void) { + msTicks++; +} + +void Delay(uint32_t dlyTicks) { + uint32_t curTicks; + + curTicks = msTicks; + while ((msTicks - curTicks) < dlyTicks); +} +} + +int main() { + SysTick_Config(SystemCoreClock / 1000); + + SIM->SCGC6 |= SIM_SCGC6_PIT_MASK; // Clock PIT + PIT->MCR = 0; // Enable PIT + + // Timer 1 + PIT->CHANNEL[1].LDVAL = 0xFFFFFFFF; + PIT->CHANNEL[1].TCTRL = 0x0; // Disable Interrupts + PIT->CHANNEL[1].TCTRL |= PIT_TCTRL_CHN_MASK; // Chain to timer 0 + PIT->CHANNEL[1].TCTRL |= PIT_TCTRL_TEN_MASK; // Start timer 1 + + // Timer 2 + PIT->CHANNEL[0].LDVAL = 0xFFFFFFFF; + PIT->CHANNEL[0].TCTRL = PIT_TCTRL_TEN_MASK; // Start timer 0, disable interrupts + + DigitalOut led(LED_BLUE); + while (true) { + Delay(1000); + led = !led; + + uint64_t ticks = (uint64_t)PIT->LTMR64H << 32; + ticks |= (uint64_t)PIT->LTMR64L; + printf("ticks: 0x%x%x\n", (uint32_t)(ticks>>32), (uint32_t)(ticks & 0xFFFFFFFF)); + + ticks = (~ticks) / 24; + uint32_t us = (uint32_t)(0xFFFFFFFF & ticks); + + printf("us : 0x%x\n", us); + } +} |