79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
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/* DACtestmain.c
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* Jonathan Valvano
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* November 30, 2022
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* Derived from timx_timer_mode_periodic_sleep_LP_MSPM0G3507_nortos_ticlang
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* gpio_toggle_output_LP_MSPM0G3507_nortos_ticlang
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* dac12_fixed_voltage_vref_internal_LP_MSPM0G3507_nortos_ticlang
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* dac12_fifo_timer_event_LP_MSPM0G3507_nortos_ticlang
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*/
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#include <ti/devices/msp/msp.h>
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#include "../inc/LaunchPad.h"
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#include "../inc/Clock.h"
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#include "../inc/Timer.h"
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#include "../inc/DAC.h"
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// PA0 is red LED1, index 0 in IOMUX PINCM table
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// PB22 is BLUE LED2, index 49 in IOMUX PINCM table
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// PB26 is RED LED2, index 56 in IOMUX PINCM table
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// PB27 is GREEN LED2, index 57 in IOMUX PINCM table
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// PA18 is S2 positive logic switch, index 39 in IOMUX PINCM table
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// PB21 is S3 negative logic switch, index 48 in IOMUX PINCM table
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// PA15 J3.30 DACout
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uint32_t Data;
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int main1(void){ // static test
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// __disable_irq();
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// Clock_Init40MHz();
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Clock_Init(OSCFREQ32MHZ);
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Data=2048;
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LaunchPad_Init();
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DAC_Init();
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while(1){
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Data = Data+1;
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if(Data > 4095) Data = 0;
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DAC_Out(Data);
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Clock_Delay1ms(1); // about 1ms
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}
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}
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const uint16_t Wave[64] = {
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2048,2249,2447,2642,2831,3013,3185,3347,3495,3630,3750,
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3853,3939,4007,4056,4085,4095,4085,4056,4007,3939,3853,
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3750,3630,3495,3347,3185,3013,2831,2642,2447,2249,2048,
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1847,1649,1454,1265,1083,911,749,601,466,346,243,
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157,89,40,11,1,11,40,89,157,243,346,
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466,601,749,911,1083,1265,1454,1649,1847
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};
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uint32_t Index;
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int main(void){ // dynamic test
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__disable_irq();
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// Clock_Init(OSCFREQ32MHZ);
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// Clock_Init40MHz();
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Clock_Init80MHz(0);
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LaunchPad_Init();
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Index = 0;
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DAC_Init();
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// TimerG0_IntArm(5,32,2); // interrupt frequency = 32MHz/5/32 = 200kHz
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// TimerG0_IntArm(5,20,2); // interrupt frequency = 20MHz/5/20 = 200kHz
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TimerG0_IntArm(5,40,2); // interrupt frequency = 40MHz/5/40 = 200kHz
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// wave frequency = interrupt frequency/table size= 200kHz/64= 3.125kHz
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__enable_irq();
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while(1){
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__WFI();
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}
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}
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// 200kHz/64 = 3.125kHz
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void TIMG0_IRQHandler(void){
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if((TIMG0->CPU_INT.IIDX) == 1){ // this will acknowledge
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GPIOB->DOUTTGL31_0 = GREEN;
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Index = Index+1;
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if(Index > 63) Index = 0;
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DAC_Out(Wave[Index]);
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}
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}
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