TI中文支持网Part Number:TMS570LC4357
按照表23-9的方式进行配置，禁用引脚pin[n]的input buffer。在N2HET运行时，使用PCNT指令依旧能够在pin[n]正常捕获实际运行电平宽度。
Ben Qin：
你好，当引脚input buffer被禁用后，电平会是逻辑0.请检查下看是否是逻辑0。
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?? ?：
经过测试，在input buffer按照table23-9的方式禁用后，HETDIN仍旧可以正常捕获外部数据，高低电平均可捕获到。
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Ben Qin：
我咨询下资深工程师后回复您。
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Ben Qin：
你好，能否发一下代码这边好测试一下？
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?? ?：
通过配置引脚1对应的DIR=0，PULDIS=1，PULSEL=0禁用输入buffer，如图中的1，3。观察到DIN寄存器的值在变化，引脚1捕获的值为0或1，如上图2位置显示当前引脚1捕获的值就为1。
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Ben Qin：
你好，最好还是将代码发上来我们这边测试一下。
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?? ?：
//het指令程序源码
B0CNT { next=B1,reg=A,max=4,data=0};
B1ECMP { next=B2,hr_lr=LOW,en_pin_action=ON,cond_addr=B2,pin=10,action=PULSEHI,reg=A,data=1,hr_data=0x00};
B2PCNT { hr_lr=LOW,next=B0,type=RISE2FALL,pin=1,control=ON,prv=OFF,data=0};
*****************************************************************************
//C语言代码
//het指令对应的结构体
static const hetINSTRUCTION_t HET_INIT0_PST[3] =
{/* B0_0 */{0x00002C20,0x00000004,0x00000000,0x00000000},/* B1_0 */{0x00004100,0x00404A18,0x00000080,0x00000000},/* B2_0 */{0x00000E61,0x04000000,0x00000000,0x00000000}
};
static const hetINSTRUCTION_t HET_INIT2_PST[2] =
{/* B0_0 */{0x00002C20,0x00000001,0x00000000,0x00000000},/* B1_0 */{0x00000100,0x00400018,0x000000DA,0x00000000}};//het初始化函数
/** @fn void hetInit(void)
*@brief Initializes the het Driver
*
*This function initializes the het 1 module.
*/
/* SourceId : HET_SourceId_001 */
/* DesignId : HET_DesignId_001 */
/* Requirements : HL_CONQ_HET_SR10 */
void hetInit(void)
{int i = 0x10000;/** @b initialize @b HET *//** - Set HET pins default output value */hetREG1->DOUT = (uint32)((uint32)0U << 31U)| (uint32)((uint32)0U << 30U)| (uint32)((uint32)0U << 29U)| (uint32)((uint32)0U << 28U)| (uint32)((uint32)0U << 27U)| (uint32)((uint32)0U << 26U)| (uint32)((uint32)0U << 25U)| (uint32)((uint32)0U << 24U)| (uint32)((uint32)0U << 23U)| (uint32)((uint32)0U << 22U)| (uint32)((uint32)0U << 21U)| (uint32)((uint32)0U << 20U)| (uint32)((uint32)0U << 19U)| (uint32)((uint32)0U << 18U)| (uint32)((uint32)0U << 17U)| (uint32)((uint32)0U << 16U)| (uint32)((uint32)0U << 15U)| (uint32)((uint32)0U << 14U)| (uint32)((uint32)0U << 13U)| (uint32)((uint32)0U << 12U)| (uint32)((uint32)0U << 11U)| (uint32)((uint32)0U << 10U)| (uint32)((uint32)0U << 9U)| (uint32)((uint32)0U << 8U)| (uint32)((uint32)0U << 7U)| (uint32)((uint32)0U << 6U)| (uint32)((uint32)0U << 5U)| (uint32)((uint32)0U << 4U)| (uint32)((uint32)0U << 3U)| (uint32)((uint32)0U << 2U)| (uint32)((uint32)0U << 1U)| (uint32)((uint32)0U << 0U);/** - Set HET pins direction */hetREG1->DIR = (uint32) 0x00000000U| (uint32) 0x00000000U//| (uint32) 0x00000004U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000c00U// | (uint32) 0x00000400U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U;/** - Set HET pins open drain enable */hetREG1->PDR = (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U;/** - Set HET pins pullup/down enable */hetREG1->PULDIS = (uint32) 0x00000000U| (uint32) 0x00000002U//| (uint32) 0x02000000U//| (uint32) 0x00040000U//| (uint32) 0x00800000U//| (uint32) 0x00080000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U;/** - Set HET pins pullup/down select */hetREG1->PSL = (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U;/** - Set HET pins high resolution share */hetREG1->HRSH = 0;
#if 0(uint32) 0x00008000U| (uint32) 0x00004000U| (uint32) 0x00002000U| (uint32) 0x00001000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000008U| (uint32) 0x00000004U//| (uint32) 0x00000002U| (uint32) 0x00000001U;
#endif/** - Set HET pins AND share */hetREG1->AND = (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U//| (uint32) 0x00000020U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U//| (uint32) 0x00000002U| (uint32) 0x00000000U;/** - Set HET pins XOR share */hetREG1->XOR = (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U//| (uint32) 0x00000020U//| (uint32) 0x00000022U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U;/* USER CODE BEGIN (1) */
#if 0//loopback,pin10-11hetREG1->LBPSEL = (0x20U<<0U) //LBPSEL,1-enable loopback| (0x20U<<16U); //LBPTYPE,0-digital,1-analoghetREG1->LBPDIR = (0xA<<16) //LBP Test enable key| (0x20<<0U); //0:1->0,1:0->1
#endif
#if 0//loopback,pin0-1hetREG1->LBPSEL = (0x1U<<0U) //LBPSEL,1-enable loopback| (0x1U<<16U); //LBPTYPE,0-digital,1-analoghetREG1->LBPDIR = (0xA<<16) //LBP Test enable key| (0x0<<0U); //0:1->0,1:0->1
#endif// het_loopback_enable(hetREG1,10,1);
/* USER CODE END *//** - Setup prescaler values*- Loop resolution prescaler*- High resolution prescaler*/hetREG1->PFR = (uint32)((uint32) 3U << 8U)| ((uint32)0U);/** - Parity control register*- Enable/Disable Parity check*///hetREG1->PCR = (uint32) 0x00000005U;hetREG1->PCR = (uint32) 0x0000010AU;/** - Fill HET RAM with opcodes and Data *//*SAFETYMCUSW 94 S MR:11.1,11.2,11.4 <APPROVED> "HET RAM Fill from the table - Allowed as per MISRA rule 11.2" *//*SAFETYMCUSW 95 S MR:11.1,11.4 <APPROVED> "HET RAM Fill from the table - Allowed as per MISRA rule 11.2" *//*SAFETYMCUSW 95 S MR:11.1,11.4 <APPROVED> "HET RAM Fill from the table - Allowed as per MISRA rule 11.2" */// (void)memcpy((void *)hetRAM1, (const void *)het1PROGRAM, sizeof(het1PROGRAM));//SSYU(void)memcpy((void *)hetRAM1, (const void *)HET_INIT0_PST, sizeof(HET_INIT0_PST));/** - Setup interrupt priority level*- PWM 0 end of dutylevel*- PWM 0 end of period level*- PWM 1 end of dutylevel*- PWM 1 end of period level*- PWM 2 end of dutylevel*- PWM 2 end of period level*- PWM 3 end of dutylevel*- PWM 3 end of period level*- PWM 4 end of dutylevel*- PWM 4 end of period level*- PWM 5 end of dutylevel*- PWM 5 end of period level*- PWM 6 end of dutylevel*- PWM 6 end of period level*- PWM 7 end of dutylevel*- PWM 7 end of period level*- CCU Edge Detection 0 level*- CCU Edge Detection 1 level*- CCU Edge Detection 2 level*- CCU Edge Detection 3 level*- CCU Edge Detection 4 level*- CCU Edge Detection 5 level*- CCU Edge Detection 6 level*- CCU Edge Detection 7 level*/hetREG1->PRY = (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U;/** - Enable interrupts*- PWM 0 end of duty*- PWM 0 end of period*- PWM 1 end of duty*- PWM 1 end of period*- PWM 2 end of duty*- PWM 2 end of period*- PWM 3 end of duty*- PWM 3 end of period*- PWM 4 end of duty*- PWM 4 end of period*- PWM 5 end of duty*- PWM 5 end of period*- PWM 6 end of duty*- PWM 6 end of period*- PWM 7 end of duty*- PWM 7 end of period*- CCU Edge Detection 0*- CCU Edge Detection 1*- CCU Edge Detection 2*- CCU Edge Detection 3*- CCU Edge Detection 4*- CCU Edge Detection 5*- CCU Edge Detection 6*- CCU Edge Detection 7*/hetREG1->INTENAC = 0xFFFFFFFFU;hetREG1->INTENAS = (uint32) 0x00000001U| (uint32) 0x00000002U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000010U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000080U| (uint32) 0x00000100U| (uint32) 0x00000000U| (uint32) 0x00000400U| (uint32) 0x00000800U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U| (uint32) 0x00000000U;hetREG1->EXC1 = 1<<8;//Program Overflow Enable/** - Setup control register*- Enable output buffers*- Ignore software breakpoints*- Master or Slave Clock Mode*- Enable HET*/hetREG1->GCR = ( 0x00000001U| (uint32)((uint32)0U << 24U)| (uint32)((uint32)1U << 16U) //1master or 0slave| (0x00000000U));//0x00020000U}
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Ben Qin：
已向相关工程师跟进。
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Ben Qin：
你好，抱歉回复晚了。
参考下下面这篇帖子：
(12) Input Buffer Disable on NHET – HalCoGen Default Is Disable – Different Behavior with Emulator Attached/Unattached – Arm-based microcontrollers forum – Arm-based microcontrollers – TI E2E support forums
上帖中说没有仿真器，输入缓冲区会禁用我们提到的上述配置，而使用仿真器，输入缓冲区不会禁用。
所以你那边是如何测试的？
带调试器或者没有带调试器？
如果带调试器，能否去掉调试器再试试？
