259 lines
6.9 KiB
C
259 lines
6.9 KiB
C
/**
|
|
* \file
|
|
*
|
|
* \brief Getting Started Application.
|
|
*
|
|
* Copyright (c) 2015-2018 Atmel Corporation. All rights reserved.
|
|
*
|
|
* \asf_license_start
|
|
*
|
|
* \page License
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* 3. The name of Atmel may not be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* 4. This software may only be redistributed and used in connection with an
|
|
* Atmel microcontroller product.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
|
|
* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
|
|
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* \asf_license_stop
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* \mainpage Getting Started Application
|
|
*
|
|
* \section Purpose
|
|
*
|
|
* The Getting Started example will help new users get familiar with Atmel's
|
|
* SAM family of microcontrollers. This basic application shows the startup
|
|
* sequence of a chip and how to use its core peripherals.
|
|
*
|
|
* \section Requirements
|
|
*
|
|
* This application has been tested on following boards:
|
|
* - SAM B11 Xplained Pro
|
|
*
|
|
* \section Description
|
|
*
|
|
* The program demo how LED,button,interrupt and dualtimer work.
|
|
* It makes the LED on the board blink at a fixed rate.
|
|
* The blinking can be stopped/started by using the push button.
|
|
*
|
|
* \section Usage
|
|
*
|
|
* -# Build the program and download it inside the evaluation board.
|
|
* -# On the computer, open and configure a terminal application
|
|
* (e.g. HyperTerminal on Microsoft Windows) with these settings:
|
|
* - 115200 bauds
|
|
* - 8 bits of data
|
|
* - No parity
|
|
* - 1 stop bit
|
|
* - No flow control
|
|
* -# Start the application.
|
|
* -# The LED(s) should start blinking on the board. In the terminal window, the
|
|
* following text should appear (values depend on the board and chip used):
|
|
* \code
|
|
* -- Getting Started Example xxx --
|
|
* -- xxxxxx-xx
|
|
* -- Compiled: xxx xx xxxx xx:xx:xx --
|
|
* \endcode
|
|
* -# Pressing and release button SW0 should make LED0 stop and restart blinking.
|
|
*
|
|
*/
|
|
/*
|
|
* Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
|
|
*/
|
|
|
|
#include <asf.h>
|
|
#include <conf_uart_serial.h>
|
|
#include <conf_example.h>
|
|
|
|
|
|
#define STRING_EOL "\r"
|
|
#define STRING_HEADER "-- Getting Started Example --\r\n" \
|
|
"-- "BOARD_NAME" --\r\n" \
|
|
"-- Compiled: "__DATE__" "__TIME__" --\r\n" \
|
|
"-- Pressing and release button SW0 should make LED0 on and off --"STRING_EOL
|
|
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
static struct uart_module cdc_uart_module;
|
|
|
|
volatile bool g_b_led0_active;
|
|
|
|
static void delay(uint32_t count)
|
|
{
|
|
for (uint32_t i = 0; i < count; i++) {
|
|
for (uint32_t j = 0; j < 100; j++)
|
|
asm volatile ("nop");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Configure UART console.
|
|
*/
|
|
static void configure_console(void)
|
|
{
|
|
struct uart_config config_uart;
|
|
|
|
uart_get_config_defaults(&config_uart);
|
|
|
|
config_uart.baud_rate = CONF_STDIO_BAUDRATE;
|
|
config_uart.pin_number_pad[0] = CONF_STDIO_PIN_PAD0;
|
|
config_uart.pin_number_pad[1] = CONF_STDIO_PIN_PAD1;
|
|
config_uart.pin_number_pad[2] = CONF_STDIO_PIN_PAD2;
|
|
config_uart.pin_number_pad[3] = CONF_STDIO_PIN_PAD3;
|
|
|
|
config_uart.pinmux_sel_pad[0] = CONF_STDIO_MUX_PAD0;
|
|
config_uart.pinmux_sel_pad[1] = CONF_STDIO_MUX_PAD1;
|
|
config_uart.pinmux_sel_pad[2] = CONF_STDIO_MUX_PAD2;
|
|
config_uart.pinmux_sel_pad[3] = CONF_STDIO_MUX_PAD3;
|
|
|
|
stdio_serial_init(&cdc_uart_module, CONF_STDIO_USART_MODULE, &config_uart);
|
|
}
|
|
|
|
/** Callback function for the GPIO driver, called when a GPIO interrupt
|
|
* detection occurs.
|
|
*/
|
|
static void gpio_callback(void)
|
|
{
|
|
g_b_led0_active = true;
|
|
}
|
|
|
|
/** Configures and registers the GPIO callback function with the
|
|
* driver.
|
|
*/
|
|
static void configure_gpio_callback(void)
|
|
{
|
|
gpio_init();
|
|
gpio_register_callback(BUTTON_0_PIN, gpio_callback,
|
|
GPIO_CALLBACK_FALLING);
|
|
gpio_enable_callback(BUTTON_0_PIN);
|
|
}
|
|
|
|
static void configure_gpio_pins(void)
|
|
{
|
|
struct gpio_config config_gpio_pin;
|
|
|
|
gpio_get_config_defaults(&config_gpio_pin);
|
|
|
|
config_gpio_pin.direction = GPIO_PIN_DIR_INPUT;
|
|
config_gpio_pin.input_pull = GPIO_PIN_PULL_NONE;
|
|
|
|
gpio_pin_set_config(BUTTON_0_PIN, &config_gpio_pin);
|
|
|
|
config_gpio_pin.direction = GPIO_PIN_DIR_OUTPUT;
|
|
|
|
gpio_pin_set_config(LED_0_PIN, &config_gpio_pin);
|
|
}
|
|
|
|
|
|
/** Dual Timer 1 Callback function.
|
|
*/
|
|
static void dualtimer_callback1(void)
|
|
{
|
|
puts("Timer1 trigger\r\n");
|
|
}
|
|
|
|
/** Dual Timer 2 Callback function.
|
|
*/
|
|
static void dualtimer_callback2(void)
|
|
{
|
|
puts("Timer2 trigger\r\n");
|
|
}
|
|
|
|
/** Configures Timer function with the driver.
|
|
*/
|
|
static void configure_dualtimer(void)
|
|
{
|
|
struct dualtimer_config config_dualtimer;
|
|
|
|
dualtimer_get_config_defaults(&config_dualtimer);
|
|
|
|
config_dualtimer.timer1.load_value = CONF_DUALTIMER_TIMER1_LOAD_VALUE;
|
|
config_dualtimer.timer2.load_value = CONF_DUALTIMER_TIMER2_LOAD_VALUE;
|
|
|
|
dualtimer_init(&config_dualtimer);
|
|
}
|
|
|
|
/** Registers Timer callback function with the driver.
|
|
*/
|
|
static void configure_dualtimer_callback(void)
|
|
{
|
|
dualtimer_register_callback(DUALTIMER_TIMER1, dualtimer_callback1);
|
|
dualtimer_register_callback(DUALTIMER_TIMER2, dualtimer_callback2);
|
|
|
|
NVIC_EnableIRQ(DUALTIMER0_IRQn);
|
|
}
|
|
|
|
/**
|
|
* \brief getting-started Application entry point.
|
|
*
|
|
* \return Unused (ANSI-C compatibility).
|
|
*/
|
|
int main(void)
|
|
{
|
|
system_clock_config(CLOCK_RESOURCE_XO_26_MHZ, CLOCK_FREQ_26_MHZ);
|
|
|
|
/*Configure UART console.*/
|
|
configure_console();
|
|
|
|
/* Output example information */
|
|
puts(STRING_HEADER);
|
|
|
|
/*Configures GPIO pins */
|
|
configure_gpio_pins();
|
|
|
|
/*Configures GPIO callback */
|
|
configure_gpio_callback();
|
|
|
|
/* Configures Dual Timer driver */
|
|
configure_dualtimer();
|
|
|
|
/* Configures Dual Timer callback */
|
|
configure_dualtimer_callback();
|
|
|
|
g_b_led0_active = true;
|
|
|
|
/*main loop*/
|
|
while (1) {
|
|
/* Wait for LED to be active */
|
|
while (!g_b_led0_active);
|
|
/* Toggle LED state if active */
|
|
gpio_pin_toggle_output_level(LED_0_PIN);
|
|
/* Wait for some time */
|
|
delay(CONF_DELAY_VALUE);
|
|
g_b_led0_active = false;
|
|
}
|
|
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|