128 lines
3.2 KiB
C
128 lines
3.2 KiB
C
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#include <stdio.h>
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#include <drv_led.h>
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#include <timers.h>
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#include <devices.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <drv_ir38k.h>
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#include "led_info.h"
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#include "devices.h"
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#define PRE_SCAN_VALUE 100
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#define SCAN_ARRAY_SIZE 7
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#define MAX_SPEED 250
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#define MIN_SPEED 50
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#define SPD_INCR 4
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timer_handler_t TimerTick(void * context);
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void UpdateKnightRiderLEDs(void);
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void init(void);
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led_t * ptrLEDs;
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ir38k_t * ir38k;
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unsigned char ScanArray[LEDS_NUM_LED_IDS];
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unsigned char inst_delay = 255;
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volatile unsigned char Tick = 0;
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uint16_t address;
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uint16_t command, prev_command;
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int rec_cmd = 1;
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int ret;
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int ercnt = 0;
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uint8_t speed = 200;
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void main( void )
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{
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init();
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// Initialize NB Starterkit infrared
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ir38k = ir38k_open(DRV_IR38K_1);
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led_turn_on(ptrLEDs, 0);
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printf("Press the up or down buttons on the remote control...\n");
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while (1)
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{
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prev_command = command;
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ret = ir38k_rxnecdata(ir38k, & address, & command);
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if (ir38k_getbiterror(ir38k) > ercnt)
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{
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ercnt = ir38k_getbiterror(ir38k);
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}
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if (ercnt > 5)
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{
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ercnt = 0;
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ir38k_rstbiterror(ir38k); // reset the error counter
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}
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switch (ret)
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{
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case 1: // repeat data
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case 0: // normal data
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switch (prev_command)
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{
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case 63750: // Up Arrow on NB3000 remote
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if (speed < MAX_SPEED) { speed += SPD_INCR; }
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printf("\rCommand: UP Speed: %d", speed);
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break;
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case 47940: // Dn Arrow on NB3000 remote
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if (speed > MIN_SPEED) { speed -= SPD_INCR; }
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printf("\rCommand: DOWN Speed: %d", speed);
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break;
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default:
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break;
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}
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break;
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case - 1: // nothing received
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break;
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case - 2: // Buffer overrun
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printf("Receive buffer overrun.\n");
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break;
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default:
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; // do nothing
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}
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printf("Address = %d, Command = %d \n", address, command);
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}
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}
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void init(void)
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{
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ptrLEDs = led_open(LEDS);
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timer_register_handler(0, 1000L, TimerTick);
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}
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timer_handler_t TimerTick(void * context)
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{
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Tick--; //indicate to mainline that the timer tick has occurred.
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if (!Tick)
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{
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UpdateKnightRiderLEDs();
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Tick = 255 - speed;
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}
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return NULL;
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}
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void UpdateKnightRiderLEDs(void)
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{
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static unsigned char ScanIndex = 0;
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static unsigned char LEDScanIndexModifier = 1;
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for (unsigned char i = 0; i < LEDS_NUM_LED_IDS; i++)
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{
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if (ScanArray[i] == PRE_SCAN_VALUE)
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ScanArray[i] = 255;
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else
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ScanArray[i] = ScanArray[i] >> 1;
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}
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ScanArray[ScanIndex] = PRE_SCAN_VALUE;
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ScanIndex += LEDScanIndexModifier;
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if ((ScanIndex == (LEDS_NUM_LED_IDS - 1)) || (ScanIndex == 0))
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LEDScanIndexModifier *= - 1;
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for (unsigned char i = 0; i < LEDS_NUM_LED_IDS; i++)
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{
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led_set_intensity(ptrLEDs, i, ScanArray[i]);
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}
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}
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