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DSP28022的ADC初始化后调用AdcOffsetSelfCal()会出现死机问题

DSP28022在调用InitAdc()函数后,再调用AdcOffsetSelfCal()就会出现程序停在:while (AdcRegs.ADCINTFLG.bit.ADCINT2 == 0){}这条指令,不再往下执行。,但是相同的程序如果下载到RAM中就不会出现这样的问题。相同的应用程序,下载到DSP28027中也没有问题。请问一下,为啥只有下载到DSP28022的FLASH中会这样?

Seven Han:

您使用的flash.CMD文件是这颗芯片的吗?

birong wang:

回复 Seven Han:

是的,我用了28022.CMD和F2802x_generic_flash.cmd文件都试过,问题一样。

Seven Han:

回复 birong wang:

需要确认下,ADC时钟是否有打开,还有InitAdc()函数里面用到了DELAY_US(),该函数需要运行在RAM.

您可以测下例程C:\ti\controlSUITE\device_support\f2802x\v230\f2802x_examples_structs\adc_soc

birong wang:

回复 Seven Han:

//###########################################################################//// FILE: F2802x_Examples.h//// TITLE: F2802x Device Definitions.////###########################################################################// $TI Release: F2802x Support Library v230 $// $Release Date: Fri May 8 07:43:05 CDT 2015 $// $Copyright: Copyright (C) 2008-2015 Texas Instruments Incorporated -// http://www.ti.com/ ALL RIGHTS RESERVED $//###########################################################################

#ifndef F2802x_EXAMPLES_H#define F2802x_EXAMPLES_H

#ifdef __cplusplusextern "C" {#endif

/*—————————————————————————– Specify the PLL control register (PLLCR) and divide select (DIVSEL) value.—————————————————————————–*/

//#define DSP28_DIVSEL 0 // Enable /4 for SYSCLKOUT//#define DSP28_DIVSEL 1 // Disable /4 for SYSCKOUT#define DSP28_DIVSEL 2 // Enable /2 for SYSCLKOUT//#define DSP28_DIVSEL 3 // Enable /1 for SYSCLKOUT

//#define DSP28_PLLCR 12 // Uncomment for 60 MHz devices [60 MHz = (10MHz * 12)/2]//#define DSP28_PLLCR 11#define DSP28_PLLCR 10 // Uncomment for 50 Mhz devices [50 Mhz = (10MHz * 10)/2]//#define DSP28_PLLCR 9//#define DSP28_PLLCR 8 // Uncomment for 40 MHz devices [40 MHz = (10MHz * 8)/2]//#define DSP28_PLLCR 7//#define DSP28_PLLCR 6//#define DSP28_PLLCR 5//#define DSP28_PLLCR 4//#define DSP28_PLLCR 3//#define DSP28_PLLCR 2//#define DSP28_PLLCR 1//#define DSP28_PLLCR 0 // PLL is bypassed in this mode//—————————————————————————-

/*—————————————————————————– Specify the clock rate of the CPU (SYSCLKOUT) in nS.

Take into account the input clock frequency and the PLL multiplier selected in step 1.

Use one of the values provided, or define your own. The trailing L is required tells the compiler to treat the number as a 64-bit value.

Only one statement should be uncommented.

Example 1: 40 MHz devices: CLKIN is a 10 MHz crystal or internal 10 MHz oscillator

In step 1 the user specified PLLCR = 0x8 for a 40 MHz CPU clock (SYSCLKOUT = 40 MHz).

In this case, the CPU_RATE will be 25.000L Uncomment the line: #define CPU_RATE 25.000L

Example 1: 50 MHz devices: CLKIN is a 10 MHz crystal or internal 10 MHz oscillator

In step 1 the user specified PLLCR = 0xA for a 50 MHz CPU clock (SYSCLKOUT = 50 MHz).

In this case, the CPU_RATE will be 20.000L Uncomment the line: #define CPU_RATE 20.000L

Example 2: 60 MHz devices: CLKIN is a 10 MHz crystal or internal 10 MHz oscillator

In step 1 the user specified PLLCR = 0xC for a 60 MHz CPU clock (SYSCLKOUT = 60 MHz).

In this case, the CPU_RATE will be 16.667L Uncomment the line: #define CPU_RATE 16.667L

—————————————————————————–*/

//#define CPU_RATE 16.667L // for a 60MHz CPU clock speed (SYSCLKOUT)#define CPU_RATE 20.000L // for a 50MHz CPU clock speed (SYSCLKOUT)//#define CPU_RATE 25.000L // for a 40MHz CPU clock speed (SYSCLKOUT)//#define CPU_RATE 33.333L // for a 30MHz CPU clock speed (SYSCLKOUT)//#define CPU_RATE 41.667L // for a 24MHz CPU clock speed (SYSCLKOUT)//#define CPU_RATE 50.000L // for a 20MHz CPU clock speed (SYSCLKOUT)//#define CPU_RATE 66.667L // for a 15MHz CPU clock speed (SYSCLKOUT)//#define CPU_RATE 100.000L // for a 10MHz CPU clock speed (SYSCLKOUT)

//—————————————————————————-

/*—————————————————————————– Target device (in F2802x_Device.h) determines CPU frequency (for examples) – either 60 MHz (for 28026 and 28027), 50 MHz (for 28023 and 28023, or 40 MHz (for 28021, 28020, and 280200). User does not have to change anything here.—————————————————————————–*/#if (DSP28_28026PT||DSP28_28026DA||DSP28_28027PT||DSP28_28027DA) // 28026||28027 devices only #define CPU_FRQ_60MHZ 1 // 60 Mhz CPU Freq (10 MHz input clock) #define CPU_FRQ_50MHZ 0 #define CPU_FRQ_40MHZ 0#elif (DSP28_28023PT||DSP28_28023DA||DSP28_28022PT||DSP28_28022DA) // 28023||28023 devices #define CPU_FRQ_60MHZ 0 #define CPU_FRQ_50MHZ 1 // 50 MHz CPU Freq (10 MHz input clock) #define CPU_FRQ_40MHZ 0#else // 28021||28020||280200 devices #define CPU_FRQ_60MHZ 0 #define CPU_FRQ_50MHZ 0 #define CPU_FRQ_40MHZ 1 // 40 MHz CPU Freq (10 MHz input clock)#endif

// The following pointer to a function call calibrates the ADC and internal oscillators#define Device_cal (void (*)(void))0x3D7C80

//—————————————————————————// Include Example Header Files://

#include "f2802x_globalprototypes.h" // Prototypes for global functions within the // .c files.#include "f2802x_epwm_defines.h" // Macros used for PWM examples.#include "f2802x_i2c_defines.h" // Macros used for I2C examples.

#define PARTNO_28027PT 0xCF#define PARTNO_28027DA 0xCE#define PARTNO_28026PT 0xC7#define PARTNO_28026DA 0xC6#define PARTNO_28023PT 0xCD#define PARTNO_28023DA 0xCC#define PARTNO_28022PT 0xC5#define PARTNO_28022DA 0xC4#define PARTNO_28021PT 0xCB#define PARTNO_28021DA 0xCA#define PARTNO_28020PT 0xC3#define PARTNO_28020DA 0xC2#define PARTNO_280200PT 0xC1#define PARTNO_280200DA 0xC0

// Include files not used with DSP/BIOS#ifndef DSP28_BIOS#include "f2802x_defaultisr.h"#endif

// DO NOT MODIFY THIS LINE.#define DELAY_US(A) DSP28x_usDelay(((((long double) A * 1000.0L) / (long double)CPU_RATE) – 9.0L) / 5.0L)

#ifdef __cplusplus}#endif /* extern "C" */

#endif // end of F2802x_EXAMPLES_H definition

//===========================================================================// End of file.//===========================================================================

请问一下,28022的这个头文件是这么修改的嘛?

Xin Liu21:

我也出现了这个问题,请问您现在解决了吗?

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