Zigbee系列 学习笔记三（初始化程序解析）

 1 int main( void )
 2 {
 3   // Turn off interrupts
 4   osal_int_disable( INTS_ALL );
 5
 6   // Initialization for board related stuff such as LEDs
 7   HAL_BOARD_INIT();
 8
 9   // Make sure supply voltage is high enough to run
10   zmain_vdd_check();
11
12   // Initialize board I/O
13   InitBoard( OB_COLD );
14
15   // Initialze HAL drivers
16   HalDriverInit();
17
18   // Initialize NV System
19   osal_nv_init( NULL );
20
21   // Initialize the MAC
22   ZMacInit();
23
24   // Determine the extended address
25   zmain_ext_addr();
26
27 #if defined ZCL_KEY_ESTABLISH
28   // Initialize the Certicom certificate information.
29   zmain_cert_init();
30 #endif
31
32   // Initialize basic NV items
33   zgInit();
34
35 #ifndef NONWK
36   // Since the AF isn‘t a task, call it‘s initialization routine
37   afInit();
38 #endif
39
40   // Initialize the operating system
41   osal_init_system();
42
43   // Allow interrupts
44   osal_int_enable( INTS_ALL );
45
46   // Final board initialization
47   InitBoard( OB_READY );
48
49   // Display information about this device
50   zmain_dev_info();
51
52   /* Display the device info on the LCD */
53 #ifdef LCD_SUPPORTED
54   zmain_lcd_init();
55 #endif
56
57 #ifdef WDT_IN_PM1
58   /* If WDT is used, this is a good place to enable it. */
59   WatchDogEnable( WDTIMX );
60 #endif
61
62   osal_start_system(); // No Return from here
63
64   return 0;  // Shouldn‘t get here.
65 } // main()

HAL_BOARD_INIT()关于LED灯的板级初始化

 1 #define HAL_BOARD_INIT()                                          2 {                                                                 3   uint16 i;                                                       4                                                                   5   SLEEPCMD &= ~OSC_PD;                       /* turn on 16MHz RC and 32MHz XOSC */                 6   while (!(SLEEPSTA & XOSC_STB));            /* wait for 32MHz XOSC stable */                      7   asm("NOP");                                /* chip bug workaround */                             8   for (i=0; i<504; i++) asm("NOP");          /* Require 63us delay for all revs */                 9   CLKCONCMD = (CLKCONCMD_32MHZ | OSC_32KHZ); /* Select 32MHz XOSC and the source for 32K clock */ 10   while (CLKCONSTA != (CLKCONCMD_32MHZ | OSC_32KHZ)); /* Wait for the change to be effective */   11   SLEEPCMD |= OSC_PD;                        /* turn off 16MHz RC */                              12                                                                  13   /* Turn on cache prefetch mode */                              14   PREFETCH_ENABLE();                                             15                                                                  16   HAL_TURN_OFF_LED1();                                           17   LED1_DDR |= LED1_BV;                                           18   HAL_TURN_OFF_LED2();                                           19   LED2_DDR |= LED2_BV;                                           20   HAL_TURN_OFF_LED3();                                           21   LED3_DDR |= LED3_BV;                                           22                                                                  23   /* configure tristates */                                      24   P0INP |= PUSH2_BV;                                             25 }

程序解读：16~21行代码，定义了三个LED灯的IO口，分别为P1_0、P1_1、P1_4。第24行代码，定义P0_0为三态

HalDriverInit()初始化硬件层各驱动

 1 void HalDriverInit (void)
 2 {
 3   /* TIMER */
 4 #if (defined HAL_TIMER) && (HAL_TIMER == TRUE)
 5   #error "The hal timer driver module is removed."
 6 #endif
 7
 8   /* ADC */
 9 #if (defined HAL_ADC) && (HAL_ADC == TRUE)
10   HalAdcInit();
11 #endif
12
13   /* DMA */
14 #if (defined HAL_DMA) && (HAL_DMA == TRUE)
15   // Must be called before the init call to any module that uses DMA.
16   HalDmaInit();
17 #endif
18
19   /* AES */
20 #if (defined HAL_AES) && (HAL_AES == TRUE)
21   HalAesInit();
22 #endif
23
24   /* LCD */
25 #if (defined HAL_LCD) && (HAL_LCD == TRUE)
26   HalLcdInit();
27 #endif
28
29   /* LED */
30 #if (defined HAL_LED) && (HAL_LED == TRUE)
31   HalLedInit();
32 #endif
33
34   /* UART */
35 #if (defined HAL_UART) && (HAL_UART == TRUE)
36   HalUARTInit();
37 #endif
38
39   /* KEY */
40 #if (defined HAL_KEY) && (HAL_KEY == TRUE)
41   HalKeyInit();
42 #endif
43
44   /* SPI */
45 #if (defined HAL_SPI) && (HAL_SPI == TRUE)
46   HalSpiInit();
47 #endif
48
49   /* HID */
50 #if (defined HAL_HID) && (HAL_HID == TRUE)
51   usbHidInit();
52 #endif
53 }

程序解析：以上程序分别进行了，