基于RT-Thread标准版及Nano版LED驱动库.zip

/************************************************************************** * Filename: lenblink.h * Author: Edward * E-Mail: oxp@yystart.com * Description: LED驱动 * * Copyright (C) 2016 YunYin Company - http://www.yystart.con/ * * Version: V1.0 (2020/3/24) : first version. *************************************************************************/ /********************************************************************* * INCLUDES */ #include <stdint.h> #include <rthw.h> #include <rtthread.h> #include <ledblink.h> /********************************************************************* * MACROS */ /********************************************************************* * CONSTANTS */ /********************************************************************* * TYPEDEFS */ /* LED control structure */ typedef struct { uint8_t mode; /* Operation mode */ uint8_t todo; /* Blink cycles left */ uint8_t onPct; /* On cycle percentage */ uint32_t time; /* On/off cycle time (msec) */ uint32_t next; /* Time for next change */ } HalLedStatus_t; /********************************************************************* * GLOBAL VARIABLES */ static uint8_t HalLedState; // LED state at last set/clr/blink update static uint8_t preBlinkState; // Original State before going to blink mode // bit 0, 1, 2, 3 represent led 0, 1, 2, 3 HalLedStatus_t HalLedControlTable[HAL_LED_DEFAULT_MAX_LEDS]; /********************************************************************* * LOCAL VARIABLES */ /********************************************************************* * LOCAL FUNCTIONS */ /********************************************************************* * GLOBAL FUNCTIONS */ void HalLedOnOff(uint8_t leds, uint8_t mode); /*************************************************************************************************** * @fn HalLedInit * * @brief Initialize LED Service * * @param init - pointer to void that contains the initialized value * * @return None ***************************************************************************************************/ void HalLedInit (void) { /* Initialize all LEDs to OFF */ HalLedSet (HAL_LED_ALL, HAL_LED_MODE_OFF); } /*************************************************************************************************** * @fn HalLedSet * * @brief Tun ON/OFF/TOGGLE given LEDs * * @param led - bit mask value of leds to be turned ON/OFF/TOGGLE * mode - BLINK, FLASH, TOGGLE, ON, OFF * @return None ***************************************************************************************************/ uint8_t HalLedSet (uint8_t leds, uint8_t mode) { uint8_t led; HalLedStatus_t *sts; switch (mode) { case HAL_LED_MODE_BLINK: /* Default blink, 1 time, D% duty cycle */ HalLedBlink (leds, 1, HAL_LED_DEFAULT_DUTY_CYCLE, HAL_LED_DEFAULT_FLASH_TIME); break; case HAL_LED_MODE_FLASH: /* Default flash, N times, D% duty cycle */ HalLedBlink (leds, HAL_LED_DEFAULT_FLASH_COUNT, HAL_LED_DEFAULT_DUTY_CYCLE, HAL_LED_DEFAULT_FLASH_TIME); break; case HAL_LED_MODE_ON: case HAL_LED_MODE_OFF: case HAL_LED_MODE_TOGGLE: led = HAL_LED_1; leds &= HAL_LED_ALL; sts = HalLedControlTable; while (leds) { if (leds & led) { if (mode != HAL_LED_MODE_TOGGLE) { sts->mode = mode; /* ON or OFF */ } else { sts->mode ^= HAL_LED_MODE_ON; /* Toggle */ } HalLedOnOff (led, sts->mode); leds ^= led; } led <<= 1; sts++; } break; default: break; } return ( HalLedState ); } /*************************************************************************************************** * @fn HalLedBlink * * @brief Blink the leds * * @param leds - bit mask value of leds to be blinked * numBlinks - number of blinks * percent - the percentage in each period where the led * will be on * period - length of each cycle in milliseconds * * @return None ***************************************************************************************************/ void HalLedBlink (uint8_t leds, uint8_t numBlinks, uint8_t percent, uint16_t period) { uint8_t led; HalLedStatus_t *sts; if (leds && percent && period) { if (percent < 100) { led = HAL_LED_1; leds &= HAL_LED_ALL; sts = HalLedControlTable; while (leds) { if (leds & led) { /* Store the current state of the led before going to blinking if not already blinking */ if(sts->mode < HAL_LED_MODE_BLINK ) preBlinkState |= (led & HalLedState); sts->mode = HAL_LED_MODE_OFF; /* Stop previous blink */ sts->time = rt_tick_from_millisecond(period); /* Time for one on/off cycle */ sts->onPct = percent; /* % of cycle LED is on */ sts->todo = numBlinks; /* Number of blink cycles */ if (!numBlinks) sts->mode |= HAL_LED_MODE_FLASH; /* Continuous */ sts->next = rt_tick_get(); /* Start now */ sts->mode |= HAL_LED_MODE_BLINK; /* Enable blinking */ leds ^= led; } led <<= 1; sts++; } } else { HalLedSet (leds, HAL_LED_MODE_ON); /* >= 100%, turn on */ } } else { HalLedSet (leds, HAL_LED_MODE_OFF); /* No on time, turn off */ } } /*************************************************************************************************** * @fn HalLedUpdate * * @brief Update leds to work with blink * * @param none * * @return none ***************************************************************************************************/ void HalLedUpdate (void) { uint8_t led; uint8_t pct; uint8_t leds; HalLedStatus_t *sts; uint32_t time; uint32_t next; uint32_t wait; next = 0; led = HAL_LED_1; leds = HAL_LED_ALL; sts = HalLedControlTable; while (leds) { if (leds & led) { if (sts->mode & HAL_LED_MODE_BLINK) { time = rt_tick_get(); if (time >= sts->next) { if (sts->mode & HAL_LED_MODE_ON) { pct = 100 - sts->onPct; /* Percentage of cycle for off */ sts->mode &= ~HAL_LED_MODE_ON; /* Say it's not on */ HalLedOnOff (led, HAL_LED_MODE_OFF); /* Turn it off */ if (!(sts->mode & HAL_LED_MODE_FLASH)) { sts->todo--; /* Not continuous, reduce count */ } } else if ( (!sts->todo) && !(sts->mode & HAL_LED_MODE_FLASH) ) { sts->mode ^= HAL_LED_MODE_BLINK; /* No more blinks */ } else { pct = sts->onPct; /* Percentage of cycle for on */ sts->mode |= HAL_LED_MODE_ON; /* Say it's on */ HalLedOnOff (led, HAL_LED_MODE_ON); /* Turn it on */ } if (sts->mode & HAL_LED_MODE_BLINK) { wait = (((uint32_t)pct * (uint32_t)sts->time) / 100); sts->next = time + wait; //rt_kprintf("sts->time:%d,pct:%d,next:%d,time:%d,wait:%d\n",sts->time,pct,sts->next,time,wait); } else { /* no more blink, no more wait */ wait = 0; /* After blinking, set the LED back to the state before it blinks */ HalLedSet (led, ((preBlinkState & led)!=0)?HAL_LED_MODE_ON:HAL_LED_M