340 lines
9.1 KiB
C
340 lines
9.1 KiB
C
/* os shim includes */
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#include "os_types.h"
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#include "dbg_io.h"
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#include "iot_io.h"
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#include "gpio_mtx.h"
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#include "pwm.h"
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#include "cpu.h"
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void delay_sometime(uint32_t times)
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{
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uint32_t loop = 0;
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while (loop++ < times) {
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__asm volatile ("nop\n");
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}
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}
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void register_print_by_addr(uint32_t addr, int num)
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{
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volatile uint32_t *p_addr = (volatile uint32_t *)addr;
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int i;
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for (i = 0; i < num; i++) {
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iot_printf("%08x,", *p_addr);
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p_addr ++;
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}
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iot_printf("\r\n");
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}
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/*
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PWM 模块同步使用,PWM0为主，PWM1和PWM2 被PWM0同步，相位关系由pwm_tb_phase_set 控制
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*/
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void pwm_main2(void)
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{
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uint8_t ch = PWM_CHANNEL_0;
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dbg_uart_init();
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pwm_tbclk_sync(ch, false);
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// 8 7
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pwm_gpio_config(ch, 26, 27);
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pwm_tbclk_ctrl(ch, true); // 使能PWM0 的时钟
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pwm_tb_phase_set(ch, 0);
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pwm_tbctl_set(ch, TB_DISABLE, TB_SHADOW, TB_SYNC_CNT_ZERO,99);
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//pwm waveform period
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pwm_tb_period_set(ch, 9999);
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//load from shadow select mode
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pwm_cmpctl_set(ch, CC_CTR_ZERO, CC_CTR_ZERO, CC_NO_SHADOW, CC_NO_SHADOW);
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//action when counter equals zero or CMPA register
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pwm_aqctla_set(ch, AQ_SET, AQ_NOTHING,
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AQ_CLEAR, AQ_NOTHING, AQ_NOTHING, AQ_NOTHING);
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pwm_aqctlb_set(ch, AQ_SET, AQ_NOTHING,
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AQ_NOTHING, AQ_NOTHING, AQ_CLEAR, AQ_NOTHING);
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pwm_cmpa_cmpb_set(ch, 3000, 6000);
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pwm_cnt_mode_set(ch, TB_COUNT_UP);
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pwm_db_inmode_set(ch, DB_INMODE_PWMA_RAW, DB_INMODE_PWMB_RAW);
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pwm_db_polsel_set(ch, DB_POLSE_NORMAL, DB_POLSE_INVERTED); //A不反相，B反相
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//pwm_db_outmode_set(ch, DB_OUTMODE_BYPASS, DB_OUTMODE_DELAYED );//A不产生死区，B产生
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//pwm_db_outmode_set(ch, DB_OUTMODE_BYPASS, DB_OUTMODE_BYPASS ); //都不产生死区
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pwm_db_rising_delay_set(ch, 1000);
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pwm_db_falling_delay_set(ch, 1000);
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//-----------------------------------------------------------------------------
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ch = PWM_CHANNEL_1;
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// 10 9
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pwm_gpio_config(ch, 28, 29);
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pwm_tbclk_ctrl(ch, true); // 使能PWM1 的时钟
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pwm_tb_phase_set(ch, 3333);
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pwm_tbctl_set(ch, TB_ENABLE, TB_SHADOW, TB_SYNC_PWM,99);
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//pwm waveform period
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pwm_tb_period_set(ch, 9999);
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//load from shadow select mode
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pwm_cmpctl_set(ch, CC_CTR_ZERO, CC_CTR_ZERO, CC_NO_SHADOW, CC_NO_SHADOW);
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//action when counter equals zero or CMPA register
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pwm_aqctla_set(ch, AQ_SET, AQ_NOTHING,
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AQ_CLEAR, AQ_NOTHING, AQ_NOTHING, AQ_NOTHING);
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pwm_aqctlb_set(ch, AQ_SET, AQ_NOTHING,
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AQ_NOTHING, AQ_NOTHING, AQ_CLEAR, AQ_NOTHING);
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pwm_cmpa_cmpb_set(ch, 3000, 6000);
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pwm_cnt_mode_set(ch, TB_COUNT_UP);
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pwm_db_inmode_set(ch, DB_INMODE_PWMA_RAW, DB_INMODE_PWMB_RAW);
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pwm_db_polsel_set(ch, DB_POLSE_NORMAL, DB_POLSE_INVERTED);
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pwm_db_outmode_set(ch, DB_OUTMODE_BYPASS, DB_OUTMODE_BYPASS );
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pwm_db_rising_delay_set(ch, 1000);
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pwm_db_falling_delay_set(ch, 1000);
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//-------------------------------------------------------------------------
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ch = PWM_CHANNEL_2;
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// 19 38
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pwm_gpio_config(ch, 9, 12);
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pwm_tbclk_ctrl(ch, true); // 使能PWM2 的时钟
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pwm_tb_phase_set(ch, 6666);
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pwm_tbctl_set(ch, TB_ENABLE, TB_SHADOW, TB_SYNC_PWM,99);
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//pwm waveform period
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pwm_tb_period_set(ch, 9999);
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//load from shadow select mode
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pwm_cmpctl_set(ch, CC_CTR_ZERO, CC_CTR_ZERO, CC_NO_SHADOW, CC_NO_SHADOW);
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//action when counter equals zero or CMPA register
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pwm_aqctla_set(ch, AQ_SET, AQ_NOTHING,
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AQ_CLEAR, AQ_NOTHING, AQ_NOTHING, AQ_NOTHING);
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pwm_aqctlb_set(ch, AQ_SET, AQ_NOTHING,
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AQ_NOTHING, AQ_NOTHING, AQ_CLEAR, AQ_NOTHING);
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pwm_cmpa_cmpb_set(ch, 3000, 6000);
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pwm_cnt_mode_set(ch, TB_COUNT_UP);
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//选择延迟输入信号
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pwm_db_inmode_set(ch, DB_INMODE_PWMB_RAW, DB_INMODE_PWMB_RAW);
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pwm_db_polsel_set(ch, DB_POLSE_NORMAL, DB_POLSE_NORMAL);
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pwm_db_outmode_set(ch, DB_OUTMODE_BYPASS, DB_OUTMODE_BYPASS );
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pwm_db_rising_delay_set(ch, 100);
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pwm_db_falling_delay_set(ch, 200);
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//-------------------------------------------------------------------------
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pwm_tbclk_sync(ch, true);
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while (1) {
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delay_sometime(1000000);
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delay_sometime(1000000);
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delay_sometime(1000000);
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delay_sometime(1000000);
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delay_sometime(1000000);
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}
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}
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//PWM 模块输出两路占空比可以独立调节的PWM波形,需要注意的点是在不同的
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//占空比组合下需要对AQ的特别设置
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void pwm_main3(void)
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{
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uint8_t ch = PWM_CHANNEL_0;
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dbg_uart_init();
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pwm_tbclk_sync(ch, false);
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// 8 7
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pwm_gpio_config(ch, 26, 27);
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pwm_tbclk_ctrl(ch, true); // 使能PWM0 的时钟
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pwm_tb_phase_set(ch, 0);
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pwm_tbctl_set(ch, TB_DISABLE, TB_SHADOW, TB_SYNC_CNT_ZERO, 99);
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//pwm waveform period
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pwm_tb_period_set(ch, 9999);
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//load from shadow select mode
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//注意这里必须都设为CC_CTR_PRD,如果为CC_CTR_ZERO 输出的波形不对,
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//在B的占空比为0时,A会少一个脉冲
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pwm_cmpctl_set(ch, CC_CTR_PRD, CC_CTR_PRD, CC_SHADOW, CC_SHADOW);
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//action when counter equals zero or CMPA register
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pwm_aqctlb_set(ch, AQ_SET, AQ_NOTHING,
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AQ_NOTHING, AQ_NOTHING, AQ_CLEAR, AQ_NOTHING);
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pwm_aqctla_set(ch, AQ_SET, AQ_NOTHING,
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AQ_CLEAR, AQ_NOTHING, AQ_NOTHING, AQ_NOTHING);
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pwm_cnt_mode_set(ch, TB_COUNT_UP);
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// 独立输出PWM 0-100都可以，给duty_a和duty_b初值分别赋：
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// 0 0 A B输出相同占空比的PWM波形
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// 0 100 A 为0时B不为0
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// 100 0 B 为0时A不为0
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//
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int duty_a = 0;
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int duty_b = 10000;
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pwm_cmpa_cmpb_set(ch, duty_a, duty_b);
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pwm_tbclk_sync(ch, true);
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while (1) {
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//因为cntb_up的优先级高于cnta_up，所以最终起作用的是b，故应改变b的配置
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if (duty_a == duty_b) {
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pwm_aqctlb_set(ch, AQ_SET, AQ_NOTHING,
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AQ_NOTHING, AQ_NOTHING, AQ_CLEAR, AQ_NOTHING);
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pwm_aqctla_set(ch, AQ_SET, AQ_NOTHING,
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AQ_CLEAR, AQ_NOTHING, AQ_CLEAR, AQ_NOTHING);
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} else if (duty_a == 0) {
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pwm_aqctla_set(ch, AQ_SET, AQ_NOTHING,
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AQ_CLEAR, AQ_NOTHING, AQ_NOTHING, AQ_NOTHING);
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pwm_aqctlb_set(ch, AQ_SET, AQ_NOTHING,
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AQ_SET, AQ_NOTHING, AQ_CLEAR, AQ_NOTHING);
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} else if (duty_b == 0) {
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pwm_aqctla_set(ch, AQ_SET, AQ_NOTHING,
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AQ_CLEAR, AQ_NOTHING, AQ_SET, AQ_NOTHING);
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pwm_aqctlb_set(ch, AQ_SET, AQ_NOTHING,
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AQ_NOTHING, AQ_NOTHING, AQ_CLEAR, AQ_NOTHING);
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} else {
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pwm_aqctlb_set(ch, AQ_SET, AQ_NOTHING,
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AQ_NOTHING, AQ_NOTHING, AQ_CLEAR, AQ_NOTHING);
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pwm_aqctla_set(ch, AQ_SET, AQ_NOTHING,
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AQ_CLEAR, AQ_NOTHING, AQ_NOTHING, AQ_NOTHING);
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}
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pwm_cmpa_cmpb_set(ch, duty_a, duty_b);
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duty_a += 100;
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if (duty_a > 10000) duty_a = 0;
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duty_b += 100;
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if (duty_b > 10000) duty_b = 0;
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delay_sometime(10000);
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}
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}
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int g_duty_a = 100;
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int g_duty_b = 200;
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uint8_t g_ch = PWM_CHANNEL_3;
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//每个周期都改变占空比
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uint32_t interrupt_cb(void)
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{
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g_duty_a += 100;
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if (g_duty_a > 10000) {
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g_duty_a = 100;
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}
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g_duty_b += 100;
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if (g_duty_b > 10000) {
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g_duty_b = 200;
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}
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pwm_cmpa_cmpb_set(g_ch, g_duty_a, g_duty_b);
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return 0;
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}
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// 中断测试
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void pwm_main4(void)
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{
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uint32_t cpu_id = cpu_get_mhartid();
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dbg_uart_init();
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iot_interrupt_init(cpu_id);
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pwm_tbclk_sync(g_ch, false);
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// 8 7
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pwm_gpio_config_with_isr(g_ch, 26, 27, interrupt_cb);
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pwm_tbclk_ctrl(g_ch, true); // 使能PWM 的时钟
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pwm_tb_phase_set(g_ch, 0);
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pwm_tbctl_set(g_ch, TB_DISABLE, TB_SHADOW, TB_SYNC_CNT_ZERO,99);
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//pwm waveform period
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pwm_tb_period_set(g_ch, 9999);
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//load from shadow select mode
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//注意：若A或B 的ld mode被配置为 CC_CTR_FREEZE 则B的占空比保持着不再变化,
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//却决于原来的状态,若是上电第一次运行,则B保持全低或者全高
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pwm_cmpctl_set(g_ch, CC_CTR_PRD, CC_CTR_PRD, CC_SHADOW, CC_SHADOW);
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//action when counter equals zero or CMPA register
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pwm_aqctlb_set(g_ch, AQ_SET, AQ_NOTHING,
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AQ_NOTHING, AQ_NOTHING, AQ_CLEAR, AQ_NOTHING);
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pwm_aqctla_set(g_ch, AQ_SET, AQ_NOTHING,
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AQ_CLEAR, AQ_NOTHING, AQ_NOTHING, AQ_NOTHING);
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pwm_cnt_mode_set(g_ch, TB_COUNT_UP);
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//pwm_interrupt_init(g_ch);
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pwm_cmpa_cmpb_set(g_ch, g_duty_a, g_duty_b);
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pwm_tbclk_sync(g_ch, true);
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while (1);
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}
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//输出 h 和 l输出互补的pwm 波形
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void pwm_main5()
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{
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uint8_t ch = PWM_CHANNEL_0;
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float duty = 0.01;
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dbg_uart_init();
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pwm_gpio_config(ch, 58, 59);
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pwm_init(ch);
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pwm_start(ch);
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pwm_set_duty(ch, 50 * 100);
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while (1) {
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//pwm_set_duty(ch, duty * 100);
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duty += 0.01;
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if (duty > 100) {
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duty = 0.01;
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}
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delay_sometime(1000);
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}
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}
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#ifdef __GNUC__
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int main(void)
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{
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pwm_main5();
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return 0;
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}
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#endif // __GCC__
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