[交流][下载]K20 Software Framework 驱动库

傻孩子-29442

一个正在完善中的Software Framework，基于K20，对官方提供的头文件进行优化扩充，并提供高度抽象的接口函数，现在已经可以使用的驱动有GPIO，FLASH，SPI，ADC和USART。提供一个状态机调度器，并附有详细例程。
另外：内附彩蛋若干~有意者可以慢慢探索（比如AES，EzPort……）。
参考工程在application目录的template文件夹下，IAR工程文件路径：\application\template\build_iar
简单的LED闪烁代码
/*----------------------------------------------------------------------------*
 * State machine: LED Flash                                                   *
 *----------------------------------------------------------------------------*/
/*! \brief initialize work led
 */
PRIVATE STATE(LED_Init) BEGIN
    //! gpio initialization
    ESSF_GPIO_INIT(LED_WORK_PORT);
    ESSF_GPIO_ENABLE(LED_WORK_PORT);
    ESSF_GPIO_PIN_CONFIG(LED_WORK_PIN, PIN_FUNC_GPIO, PIN_OUTPUT);
   
    //! transfer to next state
    TRANSFER_TO_STATE(LED_Toggle);
    EXIT_STATE;
END
/*! \brief toggle led and set delay down counter
 */
PRIVATE STATE(LED_Toggle) BEGIN   
    //! toggle work led
    ESSF_GPIO_TOGGLE(LED_WORK_PIN);
    //! initialize delay down counter
    s_hwLEDDelay = 10000;
    //! transfer to next state
    TRANSFER_TO_STATE(LED_Delay);
    EXIT_STATE;
END

/*! \brief delay
 */
PRIVATE STATE(LED_Delay) BEGIN
    if (s_hwLEDDelay) {
        s_hwLEDDelay--;
    } else {
        //! transfer to state: Output String
        TRANSFER_TO_STATE(LED_Toggle);
    }
  
    REFLEXIVE_STATE;
END
 
读取系统温度的代码

2. /*----------------------------------------------------------------------------*
3.  * State machine: Read Temprature                                             *
4.  *----------------------------------------------------------------------------*/
5. /*! \brief initialize adc, calibrate temperature channel and start first
6.  *!        conversion
7.  */
8. PRIVATE STATE(ADC_Init) BEGIN
9.    
10.     //! initiliaze adc
11.     ESSF_ADC_INIT(ESSF_ADC0);            
12.     //! configure adc0
13.     ESSF_ADC
14.         ADC_P_CLK,                  //!< clock source: peripheral clock
15.         ADC_VREF_VREF_PIN,          //!< reference: extern Vrefh/Vrefl
16.         ADC_PRESCALE_DIV8,          //!< prescaler : div8
17.         //! \name adc work mode
18.         //! @{
19.         //ADC_SW_TRIGGER      |     //!< software trigger mode (default)
20.         //ADC_SINGLE_SAMPLE   |     //!< single sample mode (default)
21.         ADC_16BIT_MODE      |       //!< 16bit mode
22.         ADC_LONG_SAMP_20CLK |       //!< long sample mode with extra 20 ADCLK
23.         ADC_HW_AVERAGE_32           //!< hardware average 32 samples
24.         //! @}
25.     ESSF_END_ADC(ESSF_ADC0);
26.     //! enable ADC
27.     ESSF_ADC_ENABLE(ESSF_ADC0);
28.     //! calibration
29.     ESSF_ADC_CHN_CALIB(ESSF_ADC0, ADC_CHN_TEMP);
30.     //! start adc sample: temperature sensor
31.     ESSF_ADC_START(ESSF_ADC0, ADC_CHN_TEMP);
32.     //! transfer to next state
33.     TRANSFER_TO_STATE(Wait_ADC_Result);
34.     EXIT_STATE;
35. END
36. /*! \brief wait adc conversion complete
37.  */
38. PRIVATE STATE(Wait_ADC_Result) BEGIN
39.    
40.     //! wait adc ready
41.     if (ESSF_ADC_IS_READY(ESSF_ADC0, ADC_CHN_TEMP)) {
42.         TRANSFER_TO_STATE(Calculate_Temprature);
43.     }
44.     REFLEXIVE_STATE;
45. END
46. /*! \brief get adc conversion result and calculate chip temperature in 0.1K
47.  */
48. PRIVATE STATE(Calculate_Temprature) BEGIN
49.    
50.     //! get adc result
51.     int32_t lADCResult = ESSF_ADC_GET_RESULT(ESSF_ADC0, ADC_CHN_TEMP);
52.     //! start adc sample: temperature sensor
53.     ESSF_ADC_START(ESSF_ADC0, ADC_CHN_TEMP);
54.     /* ---------------- temperature calculation body begin ----------------- */
55.     lADCResult = (lADCResult * 33000) >> 16;
56.     int32_t iResult = ((lADCResult - 7190) * 1000 / 1715);
57.     //! update system temperature
58.     SAFE_ATOM_CODE (
59.         s_hwSystemTemperature = (250 + 2731) - (vsf_uint16_t)iResult;
60.     )
61.     /* ---------------- temperature calculation body end ------------------- */
62.    
63.     //! transfer to next state
64.     //TRANSFER_TO_STATE(Wait_ADC_Result);
65.    
66.     CALL_FSM_EX(    REF_STATE(Temperature_Output_String), NULL,
67.                     REF_STATE(Wait_ADC_Result), pArg
68.                 );
69.     EXIT_STATE;
70. END
71. static vsf_uint16_t get_system_temperature(void)
72. {
73.     vsf_uint16_t tResult;
74.     SAFE_ATOM_CODE(
75.         tResult = s_hwSystemTemperature;
76.     )
77.     return tResult;
78. }
79.  

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不用怀疑，以上代码都是ANSI-C代码，任何编译器均支持。

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