313 lines
8.0 KiB
C
313 lines
8.0 KiB
C
#include "asm/includes.h"
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#include "asm/irflt.h"
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#include "timer.h"
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#include "generic/gpio.h"
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#define ir_log log_d
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//红外定时器定义
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#define IR_TIMER TIMER5
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#define IR_IRQ_TIME_IDX IRQ_TIME5_IDX
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#define IR_TIME_REG JL_TIMER5
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#define IRFLT_OUTPUT_TIMER_SEL(x) SFR(JL_IOMAP->CON0, 5, 3, x)
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IR_CODE ir_code; ///<红外遥控信息
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static u8 cmp_start = 0;
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static const u16 timer_div[] = {
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/*0000*/ 1,
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/*0001*/ 4,
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/*0010*/ 16,
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/*0011*/ 64,
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/*0100*/ 2,
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/*0101*/ 8,
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/*0110*/ 32,
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/*0111*/ 128,
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/*1000*/ 256,
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/*1001*/ 4 * 256,
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/*1010*/ 16 * 256,
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/*1011*/ 64 * 256,
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/*1100*/ 2 * 256,
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/*1101*/ 8 * 256,
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/*1110*/ 32 * 256,
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/*1111*/ 128 * 256,
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};
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/*----------------------------------------------------------------------------*/
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/**@brief time1红外中断服务函数
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@param void
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@param void
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@return void
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@note void timer1_ir_isr(void)
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*/
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/*----------------------------------------------------------------------------*/
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___interrupt
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void timer_ir_isr(void)
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{
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IR_TIME_REG->CON |= BIT(14);
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u16 bCap1 = IR_TIME_REG->PRD;
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IR_TIME_REG->CNT = 0;
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u8 cap = bCap1 / ir_code.timer_pad;
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ir_code.boverflow = 0;
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if (cmp_start < 3) {
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return;
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}
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/* putchar('0' + (cap/10)); */
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/* putchar('0' + (cap%10)); */
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if (cap <= 1) {
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ir_code.wData >>= 1;
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ir_code.bState++;
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} else if (cap == 2) {
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ir_code.wData >>= 1;
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ir_code.wData |= 0x8000;
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ir_code.bState++;
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}
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if (ir_code.bState == 16) {
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ir_code.wUserCode = ir_code.wData;
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}
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if (ir_code.bState == 33) {
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ir_code.bState = 1;
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}
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}
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/*----------------------------------------------------------------------------*/
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/**@brief ir按键初始化
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@param void
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@param void
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@return void
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@note void set_ir_clk(void)
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((cnt - 1)* 分频数)/lsb_clk = 1ms
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*/
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/*----------------------------------------------------------------------------*/
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/* #define APP_TIMER_CLK clk_get("timer")//选osc时钟源 */
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#define APP_TIMER_CLK 12000000L //pll12m
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#define TIMER_UNIT_MS 1
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#define MAX_TIME_CNT 0x07ff //分频准确范围，更具实际情况调整
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#define MIN_TIME_CNT 0x0030
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void set_ir_clk(void)
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{
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u32 prd_cnt;
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u8 index;
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for (index = 0; index < (sizeof(timer_div) / sizeof(timer_div[0])); index++) {
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prd_cnt = TIMER_UNIT_MS * (APP_TIMER_CLK / 1000) / timer_div[index];
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if (prd_cnt > MIN_TIME_CNT && prd_cnt < MAX_TIME_CNT) {
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break;
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}
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}
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ir_code.timer_pad = prd_cnt;
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cmp_start = 0;
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request_irq(IR_IRQ_TIME_IDX, 5, timer_ir_isr, 0);
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/* IR_TIME_REG->CON = ((index << 4) | BIT(3) | BIT(1) | BIT(0));//选择osc时钟 */
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JL_IOMAP->CON0 |= BIT(21);//这里已选了timer5,时钟源选io信号里的pll_12m,不是所有的timer都可选pll,修改请看文档
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IR_TIME_REG->CON = ((index << 4) | BIT(2) | BIT(1) | BIT(0));
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}
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/*----------------------------------------------------------------------------*/
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/**@brief 获取ir按键值
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@param void
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@param void
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@return void
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@note void get_irkey_value(void)
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*/
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/*----------------------------------------------------------------------------*/
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u8 get_irflt_value(void)
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{
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u8 tkey = 0xff;
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if (ir_code.bState != 32) {
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return tkey;
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}
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if ((((u8 *)&ir_code.wData)[0] ^ ((u8 *)&ir_code.wData)[1]) == 0xff) {
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tkey = (u8)ir_code.wData;
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} else {
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ir_code.bState = 0;
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}
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return tkey;
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}
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static u8 ir_io_level = 0;
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static u8 ir_io = 0;
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void ir_input_io_sel(u8 port)
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{
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//选择input channel1输入
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// IOMC2[13 : 8]
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// 0 ~ 15: PA0 ~ PA15
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//16 ~ 31: PB0 ~ PB15
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//32 ~ 47: PC0 ~ PC15
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//48 ~ 55: PD0 ~ PD7
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ir_io = port;
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gpio_irflt_in(port);
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gpio_set_direction(port, 1);
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gpio_set_die(port, 1);
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gpio_set_pull_up(port, 1);
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gpio_set_pull_down(port, 0);
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}
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void ir_output_timer_sel()
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{
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IRFLT_OUTPUT_TIMER_SEL(IR_TIMER);
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}
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static void ir_timeout(void *priv)
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{
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ir_code.boverflow++;
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if (ir_code.boverflow > 56) { //56*2ms ~= 112ms
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ir_code.boverflow = 56;
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ir_code.bState = 0;
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}
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cmp_start ++;
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if (cmp_start > 3) {
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cmp_start = 3;
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}
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}
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void ir_timeout_set(void)
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{
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sys_s_hi_timer_add(NULL, ir_timeout, 2); //2ms
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}
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static u8 ir_io_sus = 0;
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u8 ir_io_suspend(void)
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{
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if (ir_io_sus) {
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return 1;
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}
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if (ir_code.boverflow < 7) { //14ms内，红外接收有可能在忙碌
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return 1;
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}
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ir_io_level = gpio_read(ir_io);
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IR_TIME_REG->CON |= BIT(14);
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IR_TIME_REG->CON &= ~(0b11 << 0);
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ir_io_sus = 1;
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return 0;
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}
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u8 ir_io_resume(void)
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{
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if (!ir_io_sus) {
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return 0;
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}
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ir_io_sus = 0;
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gpio_set_direction(ir_io, 1);
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gpio_set_die(ir_io, 1);
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gpio_set_pull_up(ir_io, 1);
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gpio_set_pull_down(ir_io, 0);
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delay(10);
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if ((ir_io_level) && (ir_io_level != (gpio_read(ir_io)))) {
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ir_code.boverflow = 0;
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}
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cmp_start = 0;
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IR_TIME_REG->CNT = 0;
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IR_TIME_REG->CON |= BIT(14);
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IR_TIME_REG->CON |= (0b11 << 0);
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return 0;
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}
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void irflt_config()
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{
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JL_IR->RFLT_CON = 0;
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/* JL_IR->RFLT_CON |= BIT(7); //256 div */
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/* JL_IR->RFLT_CON |= BIT(3); //osc 24m */
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JL_IR->RFLT_CON |= BIT(7) | BIT(4); //512 div
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JL_IR->RFLT_CON |= BIT(3) | BIT(2); //PLL_48m（兼容省晶振）
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JL_IR->RFLT_CON |= BIT(0); //irflt enable
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set_ir_clk();
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}
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void log_irflt_info()
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{
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ir_log("IOMC0 = 0x%x", JL_IOMAP->CON0);
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ir_log("IOMC2 = 0x%x", JL_IOMAP->CON2);
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ir_log("RFLT_CON = 0x%x", JL_IR->RFLT_CON);
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ir_log("IR_TIME_REG = 0x%x", IR_TIME_REG->CON);
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}
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static u32 prd_1us = 0;
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static u32 send_cnt = 0;
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static u32 send_val = 0;
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___interrupt
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void timer5_isr(void)
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{
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JL_TIMER5->CON |= BIT(14);
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send_cnt ++;
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if (send_cnt % 2) {
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return;
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}
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u32 cnt = send_cnt / 2;
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if (cnt == 1) {
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JL_TIMER5->PRD = prd_1us * 5060;
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JL_TIMER5->PWM = prd_1us * 4500;
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JL_TIMER5->CNT = JL_TIMER5->PRD;
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} else if (cnt == 34) {
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JL_TIMER5->CON &= ~BIT(0);
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send_cnt = 0;
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return;
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} else if (send_val & BIT(33 - cnt)) {
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JL_TIMER5->PRD = prd_1us * 2240;
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JL_TIMER5->PWM = prd_1us * 1680;
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JL_TIMER5->CNT = JL_TIMER5->PRD;
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} else {
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JL_TIMER5->PRD = prd_1us * 1120;
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JL_TIMER5->PWM = prd_1us * 560;
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JL_TIMER5->CNT = JL_TIMER5->PRD;
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}
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}
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void timer5_send_ir_init(u32 port)
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{
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u32 src_clk = 12000000;
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JL_IOMAP->CON0 |= BIT(21);//timer的io输入选择内部pll_12m,不是所有的timer的io输入都可选pll,修改请看文档
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JL_TIMER5->CON = 0;
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JL_TIMER5->CON |= (0b01 << 2); //时钟源选择timer io
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JL_TIMER5->CON |= (0b0001 << 4); //时钟源4分频
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JL_TIMER5->CON |= BIT(9); //波形反向
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prd_1us = (src_clk / (4 * 1000000)); //1us的计数值
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request_irq(IRQ_TIME5_IDX, 5, timer5_isr, 0);
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if ((IO_PORTB_07 == port) || (IO_PORTA_03 == port)) {//硬件io，br25的timer5有两个硬件IO口
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gpio_set_die(port, 1);
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gpio_set_pull_up(port, 0);
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gpio_set_pull_down(port, 0);
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gpio_set_direction(port, 0);
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JL_TIMER5->CON |= BIT(8); //PWM使能
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} else {
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gpio_output_channle(port, CH2_T5_PWM_OUT); //任意IO使用outputchannel
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}
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}
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void timer5_send_ir_data(u32 ir_data)
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{
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send_val = ir_data;
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send_cnt = 0;
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JL_TIMER5->PRD = prd_1us * 9560; //设置周期 = 1us * 9605 = 9605us
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JL_TIMER5->PWM = prd_1us * 560; //设置高电平时间
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JL_TIMER5->CNT = JL_TIMER5->PRD; //计数值先给满，起一次pend后，JL_TIMER->PWM寄存器才有效
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JL_TIMER5->CON |= BIT(0); //使能timer模块
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}
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void timer5_send_ir_test(void)
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{
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/* timer5_send_ir_init(IO_PORTB_07); */
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timer5_send_ir_init(IO_PORTA_02);
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extern void wdt_clr();
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while (1) {
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wdt_clr();
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timer5_send_ir_data(0x6699aa55);
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os_time_dly(100);
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}
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}
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