红外发送参考ir_send_soft

#include "asm/includes.h"
#include "timer.h"
#include "generic/gpio.h"
#include "system/init.h"
#include "timer.h"
#include "app_config.h"

#undef _DEBUG_H_
#define LOG_TAG_CONST       IR_SEND_SOFT
#define LOG_TAG             "[IR_SEND_SOFT]"
#include "debug.h"
#define LOG_v(t)  log_tag_const_v_ ## t
#define LOG_i(t)  log_tag_const_i_ ## t
#define LOG_d(t)  log_tag_const_d_ ## t
#define LOG_w(t)  log_tag_const_w_ ## t
#define LOG_e(t)  log_tag_const_e_ ## t
#define LOG_c(t)  log_tag_const_c_ ## t
#define LOG_tag(tag, n) n(tag)
const char LOG_tag(LOG_TAG_CONST,LOG_v) AT(.LOG_TAG_CONST) = 0;
const char LOG_tag(LOG_TAG_CONST,LOG_i) AT(.LOG_TAG_CONST) = 1;
const char LOG_tag(LOG_TAG_CONST,LOG_d) AT(.LOG_TAG_CONST) = 0; //log_debug
const char LOG_tag(LOG_TAG_CONST,LOG_w) AT(.LOG_TAG_CONST) = 1;
const char LOG_tag(LOG_TAG_CONST,LOG_e) AT(.LOG_TAG_CONST) = 1;
const char LOG_tag(LOG_TAG_CONST,LOG_c) AT(.LOG_TAG_CONST) = 0; //log_char

/* 软件发送 ir 波形
****************************************************
 *   通过delay的方式实现，占用系统资源
 ***************************************************
 */

#define SOFT_IR_IO            IO_PORTA_00     //红外IO口
#define LOW_LEVEL_DURATION   (889)            //低电平持续时间

#define THEORY_HALF_CARRIER_PERIOD  (14) //例如36K的半个载波周期为 1/36000/2 = 14
#define COMPENSATION_VALUE          (2)  //实际上的周期会比理论上的周期要长一点，这里要加个补偿值
#define HALF_CARRIER_PERIOD         (THEORY_HALF_CARRIER_PERIOD - COMPENSATION_VALUE)
#define CARRIER_NUM                 (32) //一个逻辑搞电平输出载波周期的个数
#define DOUBLE_CARRIER_NUM          (CARRIER_NUM * 2)


AT_VOLATILE_RAM_CODE
__attribute__((always_inline_when_const_args))
static void udelay(u32 usec)
{
    JL_TIMER0->CON = BIT(14);
    JL_TIMER0->CNT = 0;
    JL_TIMER0->PRD =  clk_get("lsb")/2/ 1000000L * usec;
    JL_TIMER0->CON = BIT(6) | BIT(0); //lsb clk
    while ((JL_TIMER0->CON & BIT(15)) == 0);
    JL_TIMER0->CON = BIT(14);
}


#define     SOFT_IR_OUT_0()       {gpio_direction_output(SOFT_IR_IO, 0);}
#define     SOFT_IR_OUT_1()       {gpio_direction_output(SOFT_IR_IO, 1);}


#define IR_OUT_LOGICAL_HIGH()     \
                                do { \
                                    SOFT_IR_OUT_0(); \
                                    udelay(LOW_LEVEL_DURATION); \
                                    for(int i=0;i<DOUBLE_CARRIER_NUM;i++){ \
                                        if(0==(i%2)){ \
                                            SOFT_IR_OUT_1(); \
                                        }else{ \
                                            SOFT_IR_OUT_0(); \
                                        } \
                                        udelay(HALF_CARRIER_PERIOD); \
                                    }\
                                }while(0)

#define IR_OUT_LOGICAL_LOW()     \
                                 do { \
                                    for(int i=0;i<DOUBLE_CARRIER_NUM;i++){ \
                                        if(0==(i%2)){ \
                                            SOFT_IR_OUT_1(); \
                                        }else{ \
                                            SOFT_IR_OUT_0(); \
                                        } \
                                        udelay(HALF_CARRIER_PERIOD); \
                                    } \
                                    SOFT_IR_OUT_0(); \
                                    udelay(LOW_LEVEL_DURATION); \
                                }while(0)
#define IR_OUT_LOGICAL(logic)   \
                                do { \
                                    if(logic){ \
                                        IR_OUT_LOGICAL_HIGH(); \
                                    }else{ \
                                        IR_OUT_LOGICAL_LOW(); \
                                    } \
                                }while(0)

int soft_ir_init(void)
{
    log_info("%s\n",__func__);
    gpio_set_pull_down(SOFT_IR_IO, 0);
    gpio_set_pull_up(SOFT_IR_IO, 0);
    gpio_direction_output(SOFT_IR_IO, 0);
}

//---------------------------test----------------------//


AT_VOLATILE_RAM_CODE
static void soft_ir_loop(void *priv)
{
    log_info("%s\n",__func__);
    OS_ENTER_CRITICAL();
    IR_OUT_LOGICAL(0);
    IR_OUT_LOGICAL(1);

    IR_OUT_LOGICAL(0);
    IR_OUT_LOGICAL(1);

    IR_OUT_LOGICAL(0);
    IR_OUT_LOGICAL(1);

    IR_OUT_LOGICAL(0);
    IR_OUT_LOGICAL(1);

    IR_OUT_LOGICAL(0);
    IR_OUT_LOGICAL(1);
    OS_EXIT_CRITICAL();
}

int soft_ir_test(void)
{
    log_info("%s", __func__);
    soft_ir_init();
    sys_timer_add(NULL, soft_ir_loop, 500);
}