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【益登科技 Silicon Labs SLWSTK6021A开发板试用体验】代码分析

2021-7-30 12:59:30 28208 开发板试用

0 ` 第一篇试用报告见 https://bbs.elecfans.com/jishu_2113628_1_1.html 感谢发烧友，经过反馈，积极的协调最终将两条线缆和包装盒单独发快递发给了我，再次感谢，热心肠的发烧友超可爱。一套开发板终于完美的在一起了。首先分析下面的工程：工程：soc_thermometer_mock app.c文件中可以找到按键让灯亮的代码，如下 /************************************************************************// * Simple Button * Button state changed callback * @param[in] handle Button event handle ***************************************************************************/ void sl_button_on_change(const** sl_button_t handle) { // Button pressed. if (sl_button_get_state(handle) == SL_SIMPLE_BUTTON_PRESSED) { if (&sl_button_btn0 == handle) { sl_led_turn_on(&sl_led_led0); app_btn0_pressed = true; //当按键按下时，让LED0亮 } } // Button released. else* if (sl_button_get_state(handle) == SL_SIMPLE_BUTTON_RELEASED) { if (&sl_button_btn0 == handle) { sl_led_turn_off(&sl_led_led0); //当按键释放时，让LED0灭 app_btn0_pressed = false; } } } 在sl_led.c文件中可以找到点灯和灭灯和反转的函数，如下 void sl_led_turn_on(const sl_led_t led_handle) { led_handle->turn_on(led_handle->context); } void* sl_led_turn_off(const sl_led_t led_handle) { led_handle->turn_off(led_handle->context); } void* sl_led_toggle(const sl_led_t led_handle) { led_handle->toggle(led_handle->context); } /// A LED instance typedef* struct { void context; ///< The context for this LED instance sl_status_t (init)(void context); ///< Member function to initialize LED instance void* (turn_on)(void* context); ///< Member function to turn on LED void* (turn_off)(void* context); ///< Member function to turn off LED void* (toggle)(void* context); ///< Member function to toggle LED sl_led_state_t (get_state)(void context); ///< Member function to retrieve LED state } sl_led_t; /************************************************************************// * Turn on the LED. * * @param[in] led_handle Pointer to instance of sl_led_t to turn on ****************************************************************************/ void sl_led_turn_on(const** sl_led_t led_handle); /************************************************************************// * Turn off the LED. * * @param[in] led_handle Pointer to instance of sl_led_t to turn off ****************************************************************************/ void sl_led_turn_off(const** sl_led_t led_handle); /************************************************************************// * Toggle the LED. Turn it on if it is off, and off if it is on. * * @param[in] led_handle Pointer to instance of sl_led_t to toggle ****************************************************************************/ void sl_led_toggle(const** sl_led_t led_handle); /************************************************************************// * Get the current state of the LED. * * @param[in] led_handle Pointer to instance of sl_led_t to check * * @return sl_led_state_t Current state of LED. 1 for on, 0 for off ****************************************************************************/ sl_led_state_t sl_led_get_state(const** sl_led_t led_handle); 在文件SL_SIMPLE_LED_Instances.c中可以找到等的引脚定义 sl_simple_led_context_t simple_led0_context = { .port = SL_SIMPLE_LED_LED0_PORT, .pin = SL_SIMPLE_LED_LED0_PIN, .polarity = SL_SIMPLE_LED_LED0_POLARITY, }; const* sl_led_t sl_led_led0 = { .context = &simple_led0_context, .init = sl_simple_led_init, .turn_on = sl_simple_led_turn_on, .turn_off = sl_simple_led_turn_off, .toggle = sl_simple_led_toggle, .get_state = sl_simple_led_get_state, }; #define SL_SIMPLE_LED_LED0_PORT gpioPortC #define SL_SIMPLE_LED_LED0_PIN 4 #if (_GPIO_PORT_C_PIN_COUNT > 0) /** Port C. / gpioPortC* = 2, #endif 按键的分析：定义 #define SL_SIMPLE_BUTTON_DISABLED 2U ///< BUTTON state is disabled #define SL_SIMPLE_BUTTON_PRESSED 1U ///< BUTTON state is pressed #define SL_SIMPLE_BUTTON_RELEASED 0U ///< BUTTON state is released 获取按键的状态： sl_button_state_t sl_button_get_state(const sl_button_t handle) { if (handle->get_state != NULL) { return* handle->get_state(handle->context); } else { return (sl_button_state_t)BUTTON_ERROR; } } /// A BUTTON instance typedef struct { void context; ///< The context for this BUTTON instance sl_status_t (init)(void context); ///< Member function to initialize BUTTON instance void* (poll)(void* context); ///< Member function to poll BUTTON void* (enable)(void* context); ///< Member function to enable BUTTON void* (disable)(void* context); ///< Member function to disable BUTTON sl_button_state_t (get_state)(void context); ///< Member function to retrieve BUTTON state } sl_button_t; 按键0的定义* const sl_button_t sl_button_btn0 = { .context = &simple_btn0_context, .init = sl_simple_button_init, .get_state = sl_simple_button_get_state, .poll = sl_simple_button_poll_step, .enable = sl_simple_button_enable, .disable = sl_simple_button_disable, }; 至此，可以看出按键让灯亮灭的代码，结合硬件原理图可以进行相应的更改。 ` 0
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