113 lines
2.0 KiB
C
113 lines
2.0 KiB
C
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/*
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main.c
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PLU example
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switch at PIO0_02 and PIO0_10
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LED at PIO0_09 and PIO0_15
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*/
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#include <LPC8xx.h>
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#include <syscon.h>
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#include <gpio.h>
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#include <delay.h>
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void plu(void);
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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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config: 0
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PIO0_2 --> PLUINPUT2 --> LUT4_INP0
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PIO0_10 --> IN0 --> OUT0 --> PIN0_22 --> PLUINPUT5 --> LUT4_INP1
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Cfg | PIO10 PIO2 | result
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1 | 0 0 | 1
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Cfg | PIO10 PIO2 | result
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2 | 0 1 | 1 falsch, sieht nach 2 | 1 0 | 1 aus (reihenfolge falsch???)
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Cfg | PIO10 PIO2 | result
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3 | 0 1 | 1
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3 | 1 1 | 1
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Config=1
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PIO10 PIO2 | result
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0 0 | 1 --> ok
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0 1 | 0
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1 0 | 0
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1 1 | 0
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Config=1
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PIO10 PIO2 | result
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0 0 | 0 --> ok
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0 1 | 1
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1 0 | 0
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1 1 | 0
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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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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(main_clk/1000UL*(unsigned long)SYS_TICK_PERIOD_IN_MS);
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/* */
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GPIOInit();
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/* enable clock for several subsystems */
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Enable_Periph_Clock(CLK_IOCON);
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Enable_Periph_Clock(CLK_SWM);
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GPIOSetDir( PORT0, 15, OUTPUT);
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GPIOSetDir( PORT0, 9, OUTPUT);
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GPIOSetDir( PORT0, 2, INPUT);
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plu();
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for(;;)
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{
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GPIOSetBitValue(PORT0, 15, 1);
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delay_micro_seconds(100000);
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GPIOSetBitValue(PORT0, 15, 0);
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delay_micro_seconds(1000000);
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}
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}
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