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58 lines
1.5 KiB
58 lines
1.5 KiB
6 years ago
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#include <chip.h>
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#include <delay.h>
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/*=======================================================================*/
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/* Configuration */
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#define SYS_TICK_PERIOD_IN_MS 100
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/*=======================================================================*/
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/* system procedures and sys tick master task */
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volatile uint32_t sys_tick_irq_cnt=0;
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void __attribute__ ((interrupt)) SysTick_Handler(void)
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{
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sys_tick_irq_cnt++;
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}
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/*=======================================================================*/
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/*
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setup the hardware and start interrupts.
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called by "Reset_Handler"
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*/
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int __attribute__ ((noinline)) main(void)
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{
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/* call to the lpc lib setup procedure. This will set the IRC as clk src and main clk to 24 MHz */
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Chip_SystemInit();
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/* if the clock or PLL has been changed, also update the global variable SystemCoreClock */
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SystemCoreClockUpdate();
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/* set systick and start systick interrupt */
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SysTick_Config(SystemCoreClock/1000UL*(unsigned long)SYS_TICK_PERIOD_IN_MS);
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/* enable clock for several subsystems */
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Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_IOCON | SYSCTL_CLOCK_GPIO | SYSCTL_CLOCK_SWM);
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/* turn on GPIO */
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Chip_GPIO_Init(LPC_GPIO_PORT); /* Chip_Clock_EnablePeriphClock(SYSCTL_CLOCK_GPIO); */
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//Chip_IOCON_PinMuxSet(LPC_IOCON, 0, 15, IOCON_FUNC1); /* RxD */
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Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, 0, 15);
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for(;;)
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{
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Chip_GPIO_SetPinOutHigh(LPC_GPIO_PORT, 0, 15);
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delay_micro_seconds(1000000);
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Chip_GPIO_SetPinOutLow(LPC_GPIO_PORT, 0, 15);
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delay_micro_seconds(1000000);
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}
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}
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