/* | |
* FreeRTOS Kernel V10.3.0 | |
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved. | |
* | |
* Permission is hereby granted, free of charge, to any person obtaining a copy of | |
* this software and associated documentation files (the "Software"), to deal in | |
* the Software without restriction, including without limitation the rights to | |
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of | |
* the Software, and to permit persons to whom the Software is furnished to do so, | |
* subject to the following conditions: | |
* | |
* The above copyright notice and this permission notice shall be included in all | |
* copies or substantial portions of the Software. | |
* | |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS | |
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR | |
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | |
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
* | |
* http://www.FreeRTOS.org | |
* http://aws.amazon.com/freertos | |
* | |
* 1 tab == 4 spaces! | |
*/ | |
/* | |
Changes from V3.0.0 | |
Changes from V3.0.1 | |
*/ | |
/* | |
* Instead of the normal single demo application, the PIC18F demo is split | |
* into several smaller programs of which this is the first. This enables the | |
* demo's to be executed on the RAM limited PIC-devices. | |
* | |
* The Demo1 project is configured for a PIC18F4620 device. Main.c starts 9 | |
* tasks (including the idle task). | |
* This first demo is included to do a quick check on the FreeRTOS | |
* installation. It is also included to demonstrate a minimal project-setup | |
* to use FreeRTOS in a wizC environment. | |
* | |
* Eight independant tasks are created. All tasks share the same taskcode. | |
* Each task blinks a different led on portB. The blinkrate for each task | |
* is different, but chosen in such a way that portB will show a binary | |
* counter pattern. All blinkrates are derived from a single master-rate. | |
* By default, this masterrate is set to 100 milliseconds. Although such | |
* a low value will make it almost impossible to see some of the leds | |
* actually blink, it is a good value when using the wizC-simulator. | |
* When testing on a real chip, changing the value to eg. 500 milliseconds | |
* would be appropiate. | |
*/ | |
/* Scheduler include files. */ | |
#include <FreeRTOS.h> | |
#include <task.h> | |
#define mainBLINK_LED_INTERVAL ( ( TickType_t ) 100 / ( portTICK_PERIOD_MS ) ) | |
/* The LED that is flashed by the B0 task. */ | |
#define mainBLINK_LED0_PORT LATD | |
#define mainBLINK_LED0_TRIS TRISD | |
#define mainBLINK_LED0_PIN 0 | |
#define mainBLINK_LED0_INTERVAL ((mainBLINK_LED_INTERVAL) << (mainBLINK_LED0_PIN)) | |
/* The LED that is flashed by the B1 task. */ | |
#define mainBLINK_LED1_PORT LATD | |
#define mainBLINK_LED1_TRIS TRISD | |
#define mainBLINK_LED1_PIN 1 | |
#define mainBLINK_LED1_INTERVAL ((mainBLINK_LED_INTERVAL) << (mainBLINK_LED1_PIN)) | |
/* The LED that is flashed by the B2 task. */ | |
#define mainBLINK_LED2_PORT LATD | |
#define mainBLINK_LED2_TRIS TRISD | |
#define mainBLINK_LED2_PIN 2 | |
#define mainBLINK_LED2_INTERVAL ((mainBLINK_LED_INTERVAL) << (mainBLINK_LED2_PIN)) | |
/* The LED that is flashed by the B3 task. */ | |
#define mainBLINK_LED3_PORT LATD | |
#define mainBLINK_LED3_TRIS TRISD | |
#define mainBLINK_LED3_PIN 3 | |
#define mainBLINK_LED3_INTERVAL ((mainBLINK_LED_INTERVAL) << (mainBLINK_LED3_PIN)) | |
/* The LED that is flashed by the B4 task. */ | |
#define mainBLINK_LED4_PORT LATD | |
#define mainBLINK_LED4_TRIS TRISD | |
#define mainBLINK_LED4_PIN 4 | |
#define mainBLINK_LED4_INTERVAL ((mainBLINK_LED_INTERVAL) << (mainBLINK_LED4_PIN)) | |
/* The LED that is flashed by the B5 task. */ | |
#define mainBLINK_LED5_PORT LATD | |
#define mainBLINK_LED5_TRIS TRISD | |
#define mainBLINK_LED5_PIN 5 | |
#define mainBLINK_LED5_INTERVAL ((mainBLINK_LED_INTERVAL) << (mainBLINK_LED5_PIN)) | |
/* The LED that is flashed by the B6 task. */ | |
#define mainBLINK_LED6_PORT LATD | |
#define mainBLINK_LED6_TRIS TRISD | |
#define mainBLINK_LED6_PIN 6 | |
#define mainBLINK_LED6_INTERVAL ((mainBLINK_LED_INTERVAL) << (mainBLINK_LED6_PIN)) | |
/* The LED that is flashed by the B7 task. */ | |
#define mainBLINK_LED7_PORT LATD | |
#define mainBLINK_LED7_TRIS TRISD | |
#define mainBLINK_LED7_PIN 7 | |
#define mainBLINK_LED7_INTERVAL ((mainBLINK_LED_INTERVAL) << (mainBLINK_LED7_PIN)) | |
typedef struct { | |
unsigned char *port; | |
unsigned char *tris; | |
unsigned char pin; | |
TickType_t interval; | |
} SBLINK; | |
const SBLINK sled0 = {&mainBLINK_LED0_PORT, &mainBLINK_LED0_TRIS, mainBLINK_LED0_PIN, mainBLINK_LED0_INTERVAL}; | |
const SBLINK sled1 = {&mainBLINK_LED1_PORT, &mainBLINK_LED1_TRIS, mainBLINK_LED1_PIN, mainBLINK_LED1_INTERVAL}; | |
const SBLINK sled2 = {&mainBLINK_LED2_PORT, &mainBLINK_LED2_TRIS, mainBLINK_LED2_PIN, mainBLINK_LED2_INTERVAL}; | |
const SBLINK sled3 = {&mainBLINK_LED3_PORT, &mainBLINK_LED3_TRIS, mainBLINK_LED3_PIN, mainBLINK_LED3_INTERVAL}; | |
const SBLINK sled4 = {&mainBLINK_LED4_PORT, &mainBLINK_LED4_TRIS, mainBLINK_LED4_PIN, mainBLINK_LED4_INTERVAL}; | |
const SBLINK sled5 = {&mainBLINK_LED5_PORT, &mainBLINK_LED5_TRIS, mainBLINK_LED5_PIN, mainBLINK_LED5_INTERVAL}; | |
const SBLINK sled6 = {&mainBLINK_LED6_PORT, &mainBLINK_LED6_TRIS, mainBLINK_LED6_PIN, mainBLINK_LED6_INTERVAL}; | |
const SBLINK sled7 = {&mainBLINK_LED7_PORT, &mainBLINK_LED7_TRIS, mainBLINK_LED7_PIN, mainBLINK_LED7_INTERVAL}; | |
/* | |
* The task code for the "vBlink" task. | |
*/ | |
static portTASK_FUNCTION_PROTO(vBlink, pvParameters); | |
/*-----------------------------------------------------------*/ | |
/* | |
* Creates the tasks, then starts the scheduler. | |
*/ | |
void main( void ) | |
{ | |
/* | |
* Start the blink tasks defined in this file. | |
*/ | |
xTaskCreate( vBlink, "B0", configMINIMAL_STACK_SIZE, &sled0, tskIDLE_PRIORITY, NULL ); | |
xTaskCreate( vBlink, "B1", configMINIMAL_STACK_SIZE, &sled1, tskIDLE_PRIORITY, NULL ); | |
xTaskCreate( vBlink, "B2", configMINIMAL_STACK_SIZE, &sled2, tskIDLE_PRIORITY, NULL ); | |
xTaskCreate( vBlink, "B3", configMINIMAL_STACK_SIZE, &sled3, tskIDLE_PRIORITY, NULL ); | |
xTaskCreate( vBlink, "B4", configMINIMAL_STACK_SIZE, &sled4, tskIDLE_PRIORITY, NULL ); | |
xTaskCreate( vBlink, "B5", configMINIMAL_STACK_SIZE, &sled5, tskIDLE_PRIORITY, NULL ); | |
xTaskCreate( vBlink, "B6", configMINIMAL_STACK_SIZE, &sled6, tskIDLE_PRIORITY, NULL ); | |
xTaskCreate( vBlink, "B7", configMINIMAL_STACK_SIZE, &sled7, tskIDLE_PRIORITY, NULL ); | |
/* | |
* Start the scheduler. | |
*/ | |
vTaskStartScheduler( ); | |
while(1) /* This point should never be reached. */ | |
{ | |
} | |
} | |
/*-----------------------------------------------------------*/ | |
static portTASK_FUNCTION(vBlink, pvParameters) | |
{ | |
unsigned char *Port = ((SBLINK *)pvParameters)->port; | |
unsigned char *Tris = ((SBLINK *)pvParameters)->tris; | |
unsigned char Pin = ((SBLINK *)pvParameters)->pin; | |
TickType_t Interval = ((SBLINK *)pvParameters)->interval; | |
TickType_t xLastWakeTime; | |
/* | |
* Initialize the hardware | |
*/ | |
*Tris &= ~(1<<Pin); // Set the pin that is used by this task to ouput | |
*Port &= ~(1<<Pin); // Drive the pin low | |
/* | |
* Initialise the xLastWakeTime variable with the current time. | |
*/ | |
xLastWakeTime = xTaskGetTickCount(); | |
/* | |
* Cycle for ever, delaying then toggle the LED. | |
*/ | |
for( ;; ) | |
{ | |
/* | |
* Wait until it is time to toggle | |
*/ | |
vTaskDelayUntil( &xLastWakeTime, Interval ); | |
/* | |
* Toggle the LED for visual feedback. | |
*/ | |
*Port ^= 1<<Pin; | |
} | |
} |