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Basic support for GPIOs 0-15.

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Start new 'core' component for low-level parts

Progress towards #8
This commit is contained in:
Angus Gratton 2015-06-05 11:46:25 +10:00
parent b01e7a89bd
commit 2c46be9825
15 changed files with 704 additions and 14 deletions
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60
examples/blink/blink.c Normal file
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/* The classic "blink" example
*
* This sample code is in the public domain.
*/
#include "espressif/esp_common.h"
#include "espressif/sdk_private.h"
#include "FreeRTOS.h"
#include "task.h"
#include "esp8266.h"
const int gpio = 14;
/* This task uses the high level GPIO API (esp_gpio.h) to blink an LED.
*
* Even though it reads better than the register-level version in blinkenRegisterTask,
* they compile to the exact same instructions.
*/
void blinkenTask(void *pvParameters)
{
gpio_enable(gpio, GPIO_OUTPUT);
while(1) {
gpio_write(gpio, 1);
vTaskDelay(1000 / portTICK_RATE_MS);
gpio_write(gpio, 0);
vTaskDelay(1000 / portTICK_RATE_MS);
}
}
/* This task uses all raw register operations to set the pins.
It's not fully parameterised, as the IOMUX_SET macro requires the pin number
as part of the GPxx value.
This code compiles to the exact same instructions as blinkenTask,
so it's probably better to use the blinkenTask version.
NOTE: This task isn't enabled by default, see the commented out line in user_init.
*/
void blinkenRegisterTask(void *pvParameters)
{
GPIO_DIR_SET = BIT(gpio);
IOMUX_SET(GP14,GPIO,IOMUX_OE); /* change this line if you change 'gpio' */
while(1) {
GPIO_OUT_SET = BIT(gpio);
vTaskDelay(1000 / portTICK_RATE_MS);
GPIO_OUT_CLEAR = BIT(gpio);
vTaskDelay(1000 / portTICK_RATE_MS);
}
}
void user_init(void)
{
gpio_enable(13, GPIO_OUTPUT);
sdk_uart_div_modify(0, UART_CLK_FREQ / 115200);
xTaskCreate(blinkenTask, (signed char *)"blinkenTask", 256, NULL, 2, NULL);
//xTaskCreate(blinkenRegisterTask, (signed char *)"blinkenRegisterTask", 256, NULL, 2, NULL);
}