mirror of
https://github.com/drasko/open-ameba.git
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110 lines
3.2 KiB
C
110 lines
3.2 KiB
C
/*
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* Routines to access hardware
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*
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* Copyright (c) 2015 Realtek Semiconductor Corp.
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*
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* This module is a confidential and proprietary property of RealTek and
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* possession or use of this module requires written permission of RealTek.
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*/
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#include "device.h"
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#include "gpio_api.h" // mbed
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#include "gpio_irq_api.h" // mbed
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#include "sleep_ex_api.h"
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#include "sys_api.h"
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#include "diag.h"
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#include "main.h"
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#define GPIO_LED_PIN PC_5
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#define GPIO_IRQ_PIN PC_4
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// deep sleep can only be waked up by GPIOB_1 and GTimer
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#define GPIO_WAKE_PIN PB_1
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// NOTICE: The pull condition may differnet on your board
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PinName pull_down_list[] = {
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PA_0, PA_1, PA_2, PA_3, PA_4, PA_5, PA_6, PA_7,
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PB_0, PB_3, PB_4, PB_5, PB_6, PB_7,
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PC_0, PC_1, PC_2, PC_3, PC_4, PC_5, PC_6, PC_7, PC_8, PC_9,
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PD_0, PD_1, PD_2, PD_3, PD_4, PD_5, PD_6, PD_7, PD_8, PD_9,
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PE_0, PE_1, PE_2, PE_3, PE_4, PE_5, PE_6, PE_7, PE_8, PE_9, PE_A,
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PF_1, PF_2, PF_3, PF_4, PF_5
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};
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// NOTICE: The pull condition may differnet on your board
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PinName pull_up_list[] = {
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PB_2,
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PF_0,
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PG_0, PG_1, PG_2, PG_3, PG_4, PG_5, PG_6, PG_7,
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PH_0, PH_1, PH_2, PH_3, PH_4, PH_5, PH_6, PH_7,
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PI_0, PI_1, PI_2, PI_3, PI_4, PI_5, PI_6, PI_7,
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PJ_0, PJ_1, PJ_2, PJ_3, PJ_4, PJ_5, PJ_6,
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PK_0, PK_1, PK_2, PK_3, PK_4, PK_5, PK_6
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};
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void gpio_pull_control()
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{
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int i;
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gpio_t gpio_obj;
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for (i=0; i < sizeof(pull_down_list) / sizeof(pull_down_list[0]); i++) {
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gpio_init(&gpio_obj, pull_down_list[i]);
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gpio_dir(&gpio_obj, PIN_INPUT);
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gpio_mode(&gpio_obj, PullDown);
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}
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for (i=0; i < sizeof(pull_up_list) / sizeof(pull_up_list[0]); i++) {
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gpio_init(&gpio_obj, pull_up_list[i]);
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gpio_dir(&gpio_obj, PIN_INPUT);
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gpio_mode(&gpio_obj, PullUp);
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}
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}
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void gpio_demo_irq_handler (uint32_t id, gpio_irq_event event)
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{
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gpio_t *gpio_led;
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gpio_led = (gpio_t *)id;
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printf("Enter deep sleep...Wait 10s or give rising edge at PB_1 to wakeup system.\r\n\r\n");
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// turn off led
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gpio_write(gpio_led, 0);
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// turn off log uart
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sys_log_uart_off();
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// initialize wakeup pin at PB_1
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gpio_t gpio_wake;
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gpio_init(&gpio_wake, GPIO_WAKE_PIN);
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gpio_dir(&gpio_wake, PIN_INPUT);
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gpio_mode(&gpio_wake, PullDown);
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// Please note that the pull control is different in different board
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// This example is a sample code for RTL Ameba Dev Board
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gpio_pull_control();
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// enter deep sleep
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deepsleep_ex(DSLEEP_WAKEUP_BY_GPIO | DSLEEP_WAKEUP_BY_TIMER, 10000);
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}
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void main(void)
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{
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gpio_t gpio_led;
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gpio_irq_t gpio_btn;
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// Init LED control pin
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gpio_init(&gpio_led, GPIO_LED_PIN);
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gpio_dir(&gpio_led, PIN_OUTPUT); // Direction: Output
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gpio_mode(&gpio_led, PullNone); // No pull
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// Initial Push Button pin as interrupt source
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gpio_irq_init(&gpio_btn, GPIO_IRQ_PIN, gpio_demo_irq_handler, (uint32_t)(&gpio_led));
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gpio_irq_set(&gpio_btn, IRQ_FALL, 1); // Falling Edge Trigger
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gpio_irq_enable(&gpio_btn);
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// led on means system is in run mode
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gpio_write(&gpio_led, 1);
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printf("\r\nPush button at PC_4 to enter deep sleep\r\n");
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while(1);
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}
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