103 lines
3.0 KiB
Markdown
103 lines
3.0 KiB
Markdown
# FreeRTOS based AVR library for vector (dynamic array)
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## Features
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1. Support of any data types.
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2. The maximum size of the veсtor is 255 elements.
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## Dependencies
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1. [zh_avr_free_rtos](http://git.zh.com.ru/avr_libraries/zh_avr_free_rtos)
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## Using
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In an existing project, run the following command to install the component:
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```text
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cd ../your_project/lib
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git clone http://git.zh.com.ru/avr_libraries/zh_avr_free_rtos
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git clone http://git.zh.com.ru/avr_libraries/zh_avr_vector
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```
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In the application, add the component:
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```c
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#include "zh_avr_vector.h"
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```
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## Example
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Create, add, read, modify and delete items:
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```c
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#include "avr/io.h"
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#include "stdio.h"
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#include "zh_avr_vector.h"
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#define BAUD_RATE 9600
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#define BAUD_PRESCALE (F_CPU / 16 / BAUD_RATE - 1)
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int usart(char byte, FILE *stream)
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{
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while ((UCSR0A & (1 << UDRE0)) == 0)
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{
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}
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UDR0 = byte;
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return 0;
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}
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FILE uart = FDEV_SETUP_STREAM(usart, NULL, _FDEV_SETUP_WRITE);
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void vector_example_task(void *pvParameters)
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{
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zh_avr_vector_t vector = {0};
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char example[10] = {0};
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printf("Free Heap %d.\n", xPortGetFreeHeapSize());
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zh_avr_vector_init(&vector, sizeof(example));
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printf("Initial vector size is: %d\n", zh_avr_vector_get_size(&vector));
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strcpy(example, "Item 1");
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zh_avr_vector_push_back(&vector, &example);
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strcpy(example, "Item 2");
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zh_avr_vector_push_back(&vector, &example);
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strcpy(example, "Item 3");
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zh_avr_vector_push_back(&vector, &example);
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strcpy(example, "Item 4");
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zh_avr_vector_push_back(&vector, &example);
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strcpy(example, "Item 5");
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zh_avr_vector_push_back(&vector, &example);
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printf("Add 5 items. New vector size is: %d\n", zh_avr_vector_get_size(&vector));
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for (uint8_t i = 0; i < zh_avr_vector_get_size(&vector); ++i)
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{
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printf("Item position %d is: %s\n", i, (char *)zh_avr_vector_get_item(&vector, i));
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}
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strcpy(example, "Item 6");
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zh_avr_vector_change_item(&vector, 3, &example);
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printf("Change item on 3 position.\n");
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for (uint8_t i = 0; i < zh_avr_vector_get_size(&vector); ++i)
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{
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printf("Item position %d is: %s\n", i, (char *)zh_avr_vector_get_item(&vector, i));
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}
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zh_avr_vector_delete_item(&vector, 2);
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printf("Delete item on 2 position. New vector size is: %d\n", zh_avr_vector_get_size(&vector));
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for (uint8_t i = 0; i < zh_avr_vector_get_size(&vector); ++i)
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{
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printf("Item position %d is: %s\n", i, (char *)zh_avr_vector_get_item(&vector, i));
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}
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zh_avr_vector_free(&vector);
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printf("Task Remaining Stack Size %d.\n", uxTaskGetStackHighWaterMark(NULL));
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printf("Free Heap %d.\n", xPortGetFreeHeapSize());
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vTaskDelete(NULL);
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}
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int main(void)
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{
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UBRR0H = (BAUD_PRESCALE >> 8);
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UBRR0L = BAUD_PRESCALE;
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UCSR0B = (1 << RXEN0) | (1 << TXEN0);
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UCSR0C = (1 << UCSZ01) | (1 << UCSZ00);
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stdout = &uart;
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xTaskCreate(vector_example_task, "vector example task", 136, NULL, tskIDLE_PRIORITY, NULL);
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vTaskStartScheduler();
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return 0;
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}
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```
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