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[AIROC™ 蓝牙] 【英飞凌CYW20829测评】第2篇 呼吸灯实验

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 楼主| 小宏121 发表于 2024-7-16 23:46 | 显示全部楼层 |阅读模式
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GPIO, 代码, mt, 英飞凌, 呼吸灯, gp, IO
本帖最后由 小宏121 于 2024-7-17 23:52 编辑

先简单说下MTB和官方例程的用法

新建一个自己的文件夹myproject用于放置自己工程



复制一个官方的empty_app例程到myproject路径下


如果MTB有提示要输入 make getlibs，则在MTB终端里输入即可


复制后，这里添加新的工程


等待MTB将新的工程加载完成

这里可以对该工程的配置



比如配置GPIO


配置后的代码可以在右边看到预览


这里可以打开配置后的文件路径


这个文件夹里有配置的代码


这是刚刚配置的代码文件

这是刚刚配置的GPIO代码

熟悉了MTB的简单应用后，下面我复制官方例程的TCPWM例程 "HAL_PWM_Square_Wave"，在这基础上实现彩虹呼吸灯的效果
注意的是开发板的LED是低电平点亮灯，高电平灭灯，所以占空比越大灯越暗。

复制
  1. /*******************************************************************************
    

  2. * File Name:   main.c
    

  3. *
    

  4. * Description: This is the source code for the PWM square wave code example
    

  5. *              for ModusToolbox.
    

  6. *
    

  7. * Related Document: See README.md
    

  8. *
    

  9. ********************************************************************************
    

  10. * Copyright 2019-2024, Cypress Semiconductor Corporation (an Infineon company) or
    

  11. * an affiliate of Cypress Semiconductor Corporation.  All rights reserved.
    

  12. *
    

  13. * This software, including source code, documentation and related
    

  14. * materials ("Software") is owned by Cypress Semiconductor Corporation
    

  15. * or one of its affiliates ("Cypress") and is protected by and subject to
    

  16. * worldwide patent protection (United States and foreign),
    

  17. * United States copyright laws and international treaty provisions.
    

  18. * Therefore, you may use this Software only as provided in the license
    

  19. * agreement accompanying the software package from which you
    

  20. * obtained this Software ("EULA").
    

  21. * If no EULA applies, Cypress hereby grants you a personal, non-exclusive,
    

  22. * non-transferable license to copy, modify, and compile the Software
    

  23. * source code solely for use in connection with Cypress's
    

  24. * integrated circuit products.  Any reproduction, modification, translation,
    

  25. * compilation, or representation of this Software except as specified
    

  26. * above is prohibited without the express written permission of Cypress.
    

  27. *
    

  28. * Disclaimer: THIS SOFTWARE IS PROVIDED AS-IS, WITH NO WARRANTY OF ANY KIND,
    

  29. * EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, NONINFRINGEMENT, IMPLIED
    

  30. * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress
    

  31. * reserves the right to make changes to the Software without notice. Cypress
    

  32. * does not assume any liability arising out of the application or use of the
    

  33. * Software or any product or circuit described in the Software. Cypress does
    

  34. * not authorize its products for use in any products where a malfunction or
    

  35. * failure of the Cypress product may reasonably be expected to result in
    

  36. * significant property damage, injury or death ("High Risk Product"). By
    

  37. * including Cypress's product in a High Risk Product, the manufacturer
    

  38. * of such system or application assumes all risk of such use and in doing
    

  39. * so agrees to indemnify Cypress against all liability.
    

  40. *******************************************************************************/
    


  41. 

  42. /*******************************************************************************
    

  43. * Header Files
    

  44. *******************************************************************************/
    

  45. #include "cybsp.h"
    

  46. #include "cyhal.h"
    

  47. #include "cy_retarget_io.h"
    

  48. #include <inttypes.h>
    


  49. 


  50. 

  51. /*******************************************************************************
    

  52. * Macros
    

  53. *******************************************************************************/
    

  54. /* PWM Frequency = 2Hz */
    

  55. #define PWM_FREQUENCY (20000u)
    

  56. /* PWM Duty-cycle = 50% */
    

  57. #define PWM_DUTY_CYCLE (50.0f)
    


  58. 

  59. #define RGB_LED_R_CHANNEL 1
    

  60. #define RGB_LED_G_CHANNEL 2
    

  61. #define RGB_LED_B_CHANNEL 3
    

  62. #define PWM_PERIOD 1000 // PWM周期
    

  63. #define MAX_DUTY_CYCLE 1000 // 最大占空比
    

  64. #define MIN_DUTY_CYCLE 100 // 最小占空比
    

  65. #define BREATHING_PERIOD_MS 6000 // 呼吸周期
    

  66. #define RAINBOW_STEPS 500 // 彩虹渐变细腻程度
    


  67. 

  68. #define CYBSP_USER_LED_R (P0_2)
    

  69. #define CYBSP_USER_LED_G (P0_3)
    

  70. #define CYBSP_USER_LED_B (P0_4)
    


  71. 

  72. // 呼吸模式枚举
    

  73. typedef enum {
    

  74.     CHASE_BREATHING,       // 追逐呼吸模式
    

  75.     SYNC_BREATHING,        // 同步呼吸模式
    

  76.     HEARTBEAT_DIALOGUE     // 心跳对话模式
    

  77. } breathing_pattern_t;
    


  78. 

  79. // 当前模式
    

  80. breathing_pattern_t current_pattern = HEARTBEAT_DIALOGUE;
    


  81. 

  82. /*******************************************************************************
    

  83. * Function Prototypes
    

  84. *******************************************************************************/
    


  85. 


  86. 

  87. /*******************************************************************************
    

  88. * Function Definitions
    

  89. *******************************************************************************/
    


  90. 

  91. /*******************************************************************************
    

  92. * Function Name: handle_error
    

  93. ********************************************************************************
    

  94. * Summary:
    

  95. *  User defined error handling function.
    

  96. *
    

  97. * Parameters:
    

  98. *  status - status for evaluation.
    

  99. *
    

  100. * Return:
    

  101. *  void
    

  102. *
    

  103. *******************************************************************************/
    

  104. void handle_error(cy_rslt_t status)
    

  105. {
    

  106.     if (CY_RSLT_SUCCESS != status)
    

  107.     {
    

  108.         /* Halt the CPU while debugging */
    

  109.         CY_ASSERT(0);
    

  110.     }
    

  111. }
    


  112. 


  113. 

  114. /*******************************************************************************
    

  115. * Function Name: check_status
    

  116. ********************************************************************************
    

  117. * Summary:
    

  118. *  Prints the message and waits forever when an error occurs.
    

  119. *
    

  120. * Parameters:
    

  121. *  message - message to print if status is non-zero.
    

  122. *  status - status for evaluation.
    

  123. *
    

  124. * Return:
    

  125. *  void
    

  126. *
    

  127. *******************************************************************************/
    

  128. void check_status(char *message, cy_rslt_t status)
    

  129. {
    

  130.     if (CY_RSLT_SUCCESS != status)
    

  131.     {
    

  132.         printf("\r\n=====================================================\r\n");
    

  133.         printf("\nFAIL: %s\r\n", message);
    

  134.         printf("Error Code: 0x%08" PRIX32 "\n", status);
    

  135.         printf("\r\n=====================================================\r\n");
    


  136. 

  137.         while(true);
    

  138.     }
    

  139. }
    


  140. 


  141. 

  142. void SetPWM(cyhal_pwm_t *timer_obj, uint16_t channel, uint16_t duty_cycle)
    

  143. {
    

  144.     float f_duty_cycle = 0.0f;
    

  145. //    printf("duty_cycle=%d\n", duty_cycle);
    

  146.     if (channel == RGB_LED_R_CHANNEL || channel == RGB_LED_G_CHANNEL || channel == RGB_LED_B_CHANNEL)
    

  147.     {
    

  148.         if (duty_cycle > 1000) duty_cycle = 1000; // 限制占空比最大值
    


  149. 

  150.         duty_cycle = 1000 - duty_cycle;
    

  151.         f_duty_cycle = (float)duty_cycle/10;
    

  152.         cyhal_pwm_set_duty_cycle(timer_obj, (float)duty_cycle/10, PWM_FREQUENCY);
    

  153.     }
    

  154. }
    


  155. 

  156. // 当前色彩阶段
    

  157. static uint16_t rainbowStep = 0;
    

  158. cyhal_pwm_t pwm_led_r_control;
    

  159. cyhal_pwm_t pwm_led_g_control;
    

  160. cyhal_pwm_t pwm_led_b_control;
    


  161. 

  162. void SetRGBDutyCycle(float rFraction, float gFraction, float bFraction) {
    

  163.     // 将颜色分量映射到占空比
    

  164.     int redDuty = (int)(MAX_DUTY_CYCLE * rFraction);
    

  165.     int greenDuty = (int)(MAX_DUTY_CYCLE * gFraction);
    

  166.     int blueDuty = (int)(MAX_DUTY_CYCLE * bFraction);
    


  167. 

  168.     // 设置RGB LED的占空比
    

  169.     SetPWM(&pwm_led_r_control, RGB_LED_R_CHANNEL, redDuty);
    

  170.     SetPWM(&pwm_led_g_control, RGB_LED_G_CHANNEL, greenDuty);
    

  171.     SetPWM(&pwm_led_b_control, RGB_LED_B_CHANNEL, blueDuty);
    

  172. }
    


  173. 

  174. void RainbowBreathing(void) {
    

  175.     static uint16_t breathingCounter = 0;
    

  176.     static bool directionUp = true; // 控制呼吸方向
    


  177. 

  178.     // 计算呼吸效果的当前位置
    

  179.     uint16_t dutyCycle = MIN_DUTY_CYCLE + (MAX_DUTY_CYCLE - MIN_DUTY_CYCLE) * (breathingCounter % (BREATHING_PERIOD_MS / 10)) / (BREATHING_PERIOD_MS / 10);
    


  180. 

  181.     // 计算当前的彩虹颜色
    

  182.     float hueFraction = rainbowStep / (float)RAINBOW_STEPS;
    

  183.     while (hueFraction > 1.0f) hueFraction -= 1.0f; // 确保在0到1之间
    


  184. 

  185.     // 根据当前色彩阶段设置RGB LED的色彩
    

  186.     float r, g, b;
    

  187.     if (hueFraction < 1.0f / 3.0f) {
    

  188.         r = 1.0f;
    

  189.         g = hueFraction / (1.0f / 3.0f);
    

  190.         b = 0;
    

  191.     } else if (hueFraction < 2.0f / 3.0f) {
    

  192.         r = 1.0f - (hueFraction - 1.0f / 3.0f) * 3.0f;
    

  193.         g = 1.0f;
    

  194.         b = 0;
    

  195.     } else {
    

  196.         r = 0;
    

  197.         g = 1.0f - (hueFraction - 2.0f / 3.0f) * 3.0f;
    

  198.         b = 1.0f;
    

  199.     }
    


  200. 

  201.     // 应用呼吸效果
    

  202.     r *= dutyCycle / (float)MAX_DUTY_CYCLE;
    

  203.     g *= dutyCycle / (float)MAX_DUTY_CYCLE;
    

  204.     b *= dutyCycle / (float)MAX_DUTY_CYCLE;
    


  205. 

  206.     // 防止生成过于明亮的白色光
    

  207.     float maxBrightness = 0.5f * dutyCycle / (float)MAX_DUTY_CYCLE; // 设定最大亮度系数，避免达到最亮
    

  208.     if (r + g + b > maxBrightness) { // 如果总亮度超过限制
    

  209.         float scale = maxBrightness / (r + g + b); // 计算缩放因子
    

  210.         r *= scale;
    

  211.         g *= scale;
    

  212.         b *= scale; // 缩放各颜色通道的亮度
    

  213.     }
    


  214. 

  215.     SetRGBDutyCycle(r, g, b);
    


  216. 

  217.     // 更新rainbowStep以实现颜色移动
    

  218.     rainbowStep = (rainbowStep + 1) % RAINBOW_STEPS;
    


  219. 

  220.     // 呼吸效果递增或递减计数器
    

  221.     if (directionUp) {
    

  222.         if (breathingCounter >= BREATHING_PERIOD_MS / 10 - 1) {
    

  223.             directionUp = false;
    

  224.         } else {
    

  225.             breathingCounter++;
    

  226.         }
    

  227.     } else {
    

  228.         if (breathingCounter <= 0) {
    

  229.             directionUp = true;
    

  230.         } else {
    

  231.             breathingCounter--;
    

  232.         }
    

  233.     }
    

  234. }
    


  235. 

  236. int main(void)
    

  237. {
    

  238.     /* PWM object */
    

  239.     cyhal_pwm_t pwm_led_1_control;
    

  240.     cyhal_pwm_t pwm_led_2_control;
    


  241. 

  242.     /* API return code */
    

  243.     cy_rslt_t result;
    


  244. 

  245. #if defined(CY_DEVICE_SECURE)
    

  246.     cyhal_wdt_t wdt_obj;
    

  247.     /* Clear watchdog timer so that it doesn't trigger a reset */
    

  248.     result = cyhal_wdt_init(&wdt_obj, cyhal_wdt_get_max_timeout_ms());
    

  249.     CY_ASSERT(CY_RSLT_SUCCESS == result);
    

  250.     cyhal_wdt_free(&wdt_obj);
    

  251. #endif
    


  252. 

  253.     /* Initialize the device and board peripherals */
    

  254.     result = cybsp_init();
    

  255.     handle_error(result);
    


  256. 

  257.     /* Enable global interrupts */
    

  258.     __enable_irq();
    


  259. 

  260.     /* Initialize the retarget-io to use the debug UART port */
    

  261.     result = cy_retarget_io_init(CYBSP_DEBUG_UART_TX, CYBSP_DEBUG_UART_RX,
    

  262.                                  CY_RETARGET_IO_BAUDRATE);
    

  263.     handle_error(result);
    


  264. 


  265. 

  266.     /* Initialize the PWM */
    

  267.     result = cyhal_pwm_init(&pwm_led_r_control, CYBSP_USER_LED_R, NULL);
    

  268.     check_status("API cyhal_pwm_init failed with error code", result);
    


  269. 

  270.     result = cyhal_pwm_init(&pwm_led_g_control, CYBSP_USER_LED_G, NULL);
    

  271.     check_status("API cyhal_pwm_init failed with error code", result);
    


  272. 

  273.     result = cyhal_pwm_init(&pwm_led_b_control, CYBSP_USER_LED_B, NULL);
    

  274.     check_status("API cyhal_pwm_init failed with error code", result);
    


  275. 

  276.     /* Set the PWM output frequency and duty cycle */
    

  277.     result = cyhal_pwm_set_duty_cycle(&pwm_led_r_control, 100.0f,
    

  278.                                       PWM_FREQUENCY);
    

  279.     check_status("API cyhal_pwm_set_duty_cycle failed with error code", result);
    


  280. 

  281.     result = cyhal_pwm_set_duty_cycle(&pwm_led_g_control, 100.0f,
    

  282.                                       PWM_FREQUENCY);
    

  283.     check_status("API cyhal_pwm_set_duty_cycle failed with error code", result);
    


  284. 

  285.     result = cyhal_pwm_set_duty_cycle(&pwm_led_b_control, 100.0f,
    

  286.                                       PWM_FREQUENCY);
    

  287.     check_status("API cyhal_pwm_set_duty_cycle failed with error code", result);
    


  288. 

  289.     /* Start the PWM */
    

  290.     result = cyhal_pwm_start(&pwm_led_r_control);
    

  291.     check_status("API cyhal_pwm_start failed with error code", result);
    


  292. 

  293.     result = cyhal_pwm_start(&pwm_led_g_control);
    

  294.     check_status("API cyhal_pwm_start failed with error code", result);
    


  295. 

  296.     result = cyhal_pwm_start(&pwm_led_b_control);
    

  297.     check_status("API cyhal_pwm_start failed with error code", result);
    

  298.     printf("PWM started successfully. Entering the sleep mode...\r\n");
    


  299. 

  300.     while (1) {
    

  301.         RainbowBreathing();
    

  302.         Cy_SysLib_Delay(10); // 基于10ms的延时，调整以匹配系统时钟
    

  303.     }
    

  304. }
    


  305. 


  306. 

  307. /* [] END OF FILE */


这里放置GIF图效果

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