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器件型号：TMS320F280049C 主题中讨论的其他器件：AMC1306EVM、 C2000WARE
你(们)好
我尝试使用 AMC1306EVM 来测试 SDFM 程序。 我对文件 sdfm_ex4_pwm_sync_cpuread.c 进行了一些更改
在文件夹//ti/c2000/C2000Ware_3_02_00_00/drivelib/f28004x/examples/sdfm.下
//########################################################################### // // FILE: sdfm_ex4_pwm_sync_cpuread.c // // TITLE: SDFM PWM Sync Example // //! \addtogroup driver_example_list //! <h1> SDFM PWM Sync </h1> //! //! In this example, SDFM filter data is read by CPU in SDFM ISR routine. The //! SDFM configuration is shown below: //! - SDFM1 is used in this example. //! - MODE0 Input control mode selected //! - Comparator settings //! - Sinc3 filter selected //! - OSR = 32 //! - hlt = 0x7FFF (Higher threshold setting) //! - llt = 0x0000(Lower threshold setting) //! - Data filter settings //! - All the 4 filter modules enabled //! - Sinc3 filter selected //! - OSR = 256 //! - All the 4 filters are synchronized by using PWM //! (Master Filter enable bit) //! - Filter output represented in 16 bit format //! - In order to convert 25 bit Data filter //! into 16 bit format user needs to right shift by 10 bits for //! Sinc3 filter with OSR = 256 //! - Interrupt module settings for SDFM filter //! - All the 4 higher threshold comparator interrupts disabled //! - All the 4 lower threshold comparator interrupts disabled //! - All the 4 modulator failure interrupts disabled //! - All the 4 filter will generate interrupt when a new filter data //! is available //! //! \b External \b Connections \n //! Connect Sigma-Delta streams to (SD-D1, SD-C1 to SD-D4,SD-C4) //! on GPIO24-GPIO31 //! //! \b Watch \b Variables \n //! - \b filter1Result - Output of filter 1 //! - \b filter2Result - Output of filter 2 //! - \b filter3Result - Output of filter 3 //! - \b filter4Result - Output of filter 4 //! // //########################################################################### // $TI Release: F28004x Support Library v1.10.00.00 $ // $Release Date: Tue May 26 17:06:03 IST 2020 $ // $Copyright: // Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/ // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions // are met: // // Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // // Redistributions in binary form must reproduce the above copyright // notice, this list of conditions and the following disclaimer in the // documentation and/or other materials provided with the // distribution. // // Neither the name of Texas Instruments Incorporated nor the names of // its contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // $ //########################################################################### // // Included Files // #include "driverlib.h" #include "device.h" #include <stdio.h> // // Defines // #define MAX_SAMPLES 1024 #define EPWM_TIMER_TBPRD 65535 // ePWM Period register #define JIAKAI // // Globals // uint32_t sdfmInstance; uint32_t pwmInstance = EPWM8_BASE; // ePWM 8 for synchronizing SDFM1 filters int16_t filter1Result[MAX_SAMPLES]; int16_t filter2Result[MAX_SAMPLES]; int16_t filter3Result[MAX_SAMPLES]; int16_t filter4Result[MAX_SAMPLES]; #pragma DATA_SECTION(filter1Result, "Filter1_RegsFile"); #pragma DATA_SECTION(filter2Result, "Filter2_RegsFile"); #pragma DATA_SECTION(filter3Result, "Filter3_RegsFile"); #pragma DATA_SECTION(filter4Result, "Filter4_RegsFile"); // // Function Prototypes // void configureSDFMPins(void); void initEPWM(uint32_t epwmInstance); __interrupt void sdfm1ErrorISR(void); __interrupt void sdfmDR1ISR(void); // // Main // void main(void) { uint16_t hlt, llt; // // Initialize device clock and peripherals // Device_init(); // // Setup GPIO by disabling pin locks and enabling pullups // Device_initGPIO(); // // Initialize PIE and clear PIE registers. Disables CPU interrupts. // Interrupt_initModule(); // // Initialize the PIE vector table with pointers to the shell Interrupt // Service Routines (ISR). // Interrupt_initVectorTable(); // // Interrupts that are used in this example are re-mapped to // ISR functions found within this file. // Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP5); Interrupt_register(INT_SDFM1DR1, sdfmDR1ISR); Interrupt_register(INT_SDFM1, sdfm1ErrorISR); // // Enable SDFM1 Error and DR interrupts // Interrupt_enable(INT_SDFM1); Interrupt_enable(INT_SDFM1DR1); // // Configure GPIO pins as SDFM pins // configureSDFMPins(); // // Select SDFM1 // sdfmInstance = SDFM1_BASE; // // Input Control Module: // Configure Modulator Clock rate = Modulator data rate // SDFM_setupModulatorClock(sdfmInstance, SDFM_FILTER_1, SDFM_MODULATOR_CLK_EQUAL_DATA_RATE); #ifndef JIAKAI SDFM_setupModulatorClock(sdfmInstance, SDFM_FILTER_2, SDFM_MODULATOR_CLK_EQUAL_DATA_RATE); SDFM_setupModulatorClock(sdfmInstance, SDFM_FILTER_3, SDFM_MODULATOR_CLK_EQUAL_DATA_RATE); SDFM_setupModulatorClock(sdfmInstance, SDFM_FILTER_4, SDFM_MODULATOR_CLK_EQUAL_DATA_RATE); #endif // // Comparator Module // hlt = 0x7FFF; //Over value threshold settings llt = 0x0000; //Under value threshold settings // // Configure Comparator module's comparator filter type and comparator's OSR // value, higher threshold, lower threshold // SDFM_configComparator(sdfmInstance, (SDFM_FILTER_1 | SDFM_FILTER_SINC_3 | SDFM_SET_OSR(32)), (SDFM_GET_LOW_THRESHOLD(llt) | SDFM_GET_HIGH_THRESHOLD(hlt)), 0); #ifndef JIAKAI SDFM_configComparator(sdfmInstance, (SDFM_FILTER_2 | SDFM_FILTER_SINC_3 | SDFM_SET_OSR(32)), (SDFM_GET_LOW_THRESHOLD(llt) | SDFM_GET_HIGH_THRESHOLD(hlt)), 0); SDFM_configComparator(sdfmInstance, (SDFM_FILTER_3 | SDFM_FILTER_SINC_3 | SDFM_SET_OSR(32)), (SDFM_GET_LOW_THRESHOLD(llt) | SDFM_GET_HIGH_THRESHOLD(hlt)), 0); SDFM_configComparator(sdfmInstance, (SDFM_FILTER_4 | SDFM_FILTER_SINC_3 | SDFM_SET_OSR(32)), (SDFM_GET_LOW_THRESHOLD(llt) | SDFM_GET_HIGH_THRESHOLD(hlt)), 0); #endif // // Data filter Module // // Configure Data filter modules filter type, OSR value and // enable / disable data filter // SDFM_configDataFilter(sdfmInstance, (SDFM_FILTER_1 | SDFM_FILTER_SINC_3 | SDFM_SET_OSR(256)), (SDFM_DATA_FORMAT_16_BIT | SDFM_FILTER_ENABLE | SDFM_SHIFT_VALUE(0x000A))); #ifndef JIAKAI SDFM_configDataFilter(sdfmInstance, (SDFM_FILTER_2 | SDFM_FILTER_SINC_3 | SDFM_SET_OSR(256)), (SDFM_DATA_FORMAT_16_BIT | SDFM_FILTER_ENABLE | SDFM_SHIFT_VALUE(0x000A))); SDFM_configDataFilter(sdfmInstance, (SDFM_FILTER_3 | SDFM_FILTER_SINC_3 | SDFM_SET_OSR(256)), (SDFM_DATA_FORMAT_16_BIT | SDFM_FILTER_ENABLE | SDFM_SHIFT_VALUE(0x000A))); SDFM_configDataFilter(sdfmInstance, (SDFM_FILTER_4 | SDFM_FILTER_SINC_3 | SDFM_SET_OSR(256)), (SDFM_DATA_FORMAT_16_BIT | SDFM_FILTER_ENABLE | SDFM_SHIFT_VALUE(0x000A))); #endif // // Enable Master filter bit: Unless this bit is set none of the filter modules // can be enabled. All the filter modules are synchronized when master filter // bit is enabled after individual filter modules are enabled. // SDFM_enableMasterFilter(sdfmInstance); // // PWM signals can synchronize SDFM1 filters. Enabling PWM sync for SDFM // filters. // SDFM_enableExternalReset(sdfmInstance, SDFM_FILTER_1); #ifndef JIAKAI SDFM_enableExternalReset(sdfmInstance, SDFM_FILTER_2); SDFM_enableExternalReset(sdfmInstance, SDFM_FILTER_3); SDFM_enableExternalReset(sdfmInstance, SDFM_FILTER_4); #endif SDFM_setPWMSyncSource(sdfmInstance, SDFM_FILTER_1, SDFM_SYNC_PWM8_SOCA); #ifndef JIAKAI SDFM_setPWMSyncSource(sdfmInstance, SDFM_FILTER_2, SDFM_SYNC_PWM8_SOCA); SDFM_setPWMSyncSource(sdfmInstance, SDFM_FILTER_3, SDFM_SYNC_PWM8_SOCA); SDFM_setPWMSyncSource(sdfmInstance, SDFM_FILTER_4, SDFM_SYNC_PWM8_SOCA); #endif // // Init EPWMs // initEPWM(pwmInstance); // // Enable interrupts // // Following SDFM interrupts can be enabled / disabled using this function. // Enable / disable comparator high threshold // Enable / disable comparator low threshold // Enable / disable modulator clock failure // Enable / disable filter acknowledge // SDFM_enableInterrupt(sdfmInstance, SDFM_FILTER_1, (SDFM_MODULATOR_FAILURE_INTERRUPT | SDFM_DATA_FILTER_ACKNOWLEDGE_INTERRUPT)); #ifndef JIAKAI SDFM_enableInterrupt(sdfmInstance, SDFM_FILTER_2, (SDFM_MODULATOR_FAILURE_INTERRUPT | SDFM_DATA_FILTER_ACKNOWLEDGE_INTERRUPT)); SDFM_enableInterrupt(sdfmInstance, SDFM_FILTER_3, (SDFM_MODULATOR_FAILURE_INTERRUPT | SDFM_DATA_FILTER_ACKNOWLEDGE_INTERRUPT)); SDFM_enableInterrupt(sdfmInstance, SDFM_FILTER_4, (SDFM_MODULATOR_FAILURE_INTERRUPT | SDFM_DATA_FILTER_ACKNOWLEDGE_INTERRUPT)); #endif SDFM_disableInterrupt(sdfmInstance, SDFM_FILTER_1, (SDFM_HIGH_LEVEL_THRESHOLD_INTERRUPT | SDFM_LOW_LEVEL_THRESHOLD_INTERRUPT)); #ifndef JIAKAI SDFM_disableInterrupt(sdfmInstance, SDFM_FILTER_2, (SDFM_HIGH_LEVEL_THRESHOLD_INTERRUPT | SDFM_LOW_LEVEL_THRESHOLD_INTERRUPT)); SDFM_disableInterrupt(sdfmInstance, SDFM_FILTER_3, (SDFM_HIGH_LEVEL_THRESHOLD_INTERRUPT | SDFM_LOW_LEVEL_THRESHOLD_INTERRUPT)); SDFM_disableInterrupt(sdfmInstance, SDFM_FILTER_4, (SDFM_HIGH_LEVEL_THRESHOLD_INTERRUPT | SDFM_LOW_LEVEL_THRESHOLD_INTERRUPT)); #endif while((HWREGH(pwmInstance + EPWM_O_TBCTR)) < 550); // // Enable master interrupt so that any of the filter interrupts can trigger // by SDFM interrupt to CPU // SDFM_enableMasterInterrupt(sdfmInstance); // // Enable Global Interrupt (INTM) and realtime interrupt (DBGM) // EINT; ERTM; while(1); } // // sdfm1ErrorISR - SDFM1 Error ISR // __interrupt void sdfm1ErrorISR(void) { // // Clear SDFM flag register (SDIFLG) // SDFM_clearInterruptFlag(SDFM1_BASE, SDFM_MASTER_INTERRUPT_FLAG | 0xFFFF); // // Acknowledge this interrupt to receive more interrupts from group 5 // Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP5); } // // sdfmDR1ISR - SDFM DR1 ISR // __interrupt void sdfmDR1ISR(void) { static uint16_t loopCounter1 = 0; SDFM_setOutputDataFormat(SDFM1_BASE, SDFM_FILTER_1, SDFM_DATA_FORMAT_16_BIT); // // Read SDFM flag register (SDIFLG) // if(loopCounter1 >= MAX_SAMPLES) { loopCounter1 = 0; } while((HWREG(SDFM1_BASE + SDFM_O_SDIFLG) & 0xF000U) != 0xF000U) { } #ifdef JIAKAI filter1Result[loopCounter1++] = (int16_t)(SDFM_getFilterData(SDFM1_BASE, SDFM_FILTER_1) >> 16U); #else filter1Result[loopCounter1] = (int16_t)(SDFM_getFilterData(SDFM1_BASE, SDFM_FILTER_1) >> 16U); filter2Result[loopCounter1] = (int16_t)(SDFM_getFilterData(SDFM1_BASE, SDFM_FILTER_2) >> 16U); filter3Result[loopCounter1] = (int16_t)(SDFM_getFilterData(SDFM1_BASE, SDFM_FILTER_3) >> 16U); filter4Result[loopCounter1++] = (int16_t)(SDFM_getFilterData(SDFM1_BASE, SDFM_FILTER_4) >> 16U); #endif // // Clear SDFM flag register (SDIFLG) // SDFM_clearInterruptFlag(SDFM1_BASE, SDFM_MASTER_INTERRUPT_FLAG | SDFM_FILTER_1_NEW_DATA_FLAG | SDFM_FILTER_2_NEW_DATA_FLAG | SDFM_FILTER_3_NEW_DATA_FLAG | SDFM_FILTER_4_NEW_DATA_FLAG); // // Acknowledge this interrupt to receive more interrupts from group 5 // Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP5); } // // configureSDFMPins - Configure SDFM GPIOs // void configureSDFMPins(void) { uint16_t pin; // // Configure GPIO16-GPIO31 as SDFM pins // #ifdef JIAKAI for(pin = 16; pin <= 17; pin++) { GPIO_setDirectionMode(pin, GPIO_DIR_MODE_IN); GPIO_setMasterCore(pin, GPIO_CORE_CPU1); GPIO_setPadConfig(pin, GPIO_PIN_TYPE_STD); GPIO_setQualificationMode(pin, GPIO_QUAL_ASYNC); } GPIO_setPinConfig(GPIO_16_SD_D1); GPIO_setPinConfig(GPIO_17_SD_C1); #else for(pin = 24; pin <= 31; pin++) { GPIO_setDirectionMode(pin, GPIO_DIR_MODE_IN); GPIO_setMasterCore(pin, GPIO_CORE_CPU1); GPIO_setPadConfig(pin, GPIO_PIN_TYPE_STD); GPIO_setQualificationMode(pin, GPIO_QUAL_ASYNC); } GPIO_setPinConfig(GPIO_24_SD_D1); GPIO_setPinConfig(GPIO_25_SD_C1); GPIO_setPinConfig(GPIO_26_SD_D2); GPIO_setPinConfig(GPIO_27_SD_C2); GPIO_setPinConfig(GPIO_28_SD_D3); GPIO_setPinConfig(GPIO_29_SD_C3); GPIO_setPinConfig(GPIO_30_SD_D4); GPIO_setPinConfig(GPIO_31_SD_C4); #endif } // // done - Function to halt debugger and stop application // void done(void) { asm(" ESTOP0"); for(;;); } // // initEPWM - Initialize specified EPWM settings // void initEPWM(uint32_t epwmInstance) { // // Disable sync(Freeze clock to PWM as well) // SysCtl_disablePeripheral(SYSCTL_PERIPH_CLK_TBCLKSYNC); // // Setup TBCLK: Configure timer period = 801 TBCLKs, phase = 0 & // clear counter // EPWM_setTimeBasePeriod(epwmInstance, EPWM_TIMER_TBPRD); EPWM_setPhaseShift(epwmInstance, 0U); EPWM_setTimeBaseCounter(epwmInstance, 0U); // // Set CMPA value // EPWM_setCounterCompareValue(epwmInstance, EPWM_COUNTER_COMPARE_A, 200U); // // Setup counter mode // EPWM_setTimeBaseCounterMode(epwmInstance, EPWM_COUNTER_MODE_UP); EPWM_setClockPrescaler(epwmInstance, EPWM_CLOCK_DIVIDER_1, EPWM_HSCLOCK_DIVIDER_1); // // Set actions: // Toggle PWMxA on event A, up-count // Toggle PWMxB on event A, up-count // GPIO_setPadConfig(0, GPIO_PIN_TYPE_STD); GPIO_setPinConfig(GPIO_0_EPWM1A); GPIO_setPadConfig(1, GPIO_PIN_TYPE_STD); GPIO_setPinConfig(GPIO_1_EPWM1B); EPWM_setTimeBasePeriod(EPWM1_BASE, 24); // PWM1 period: 0.5us EPWM_setTimeBaseCounterMode(EPWM1_BASE, EPWM_COUNTER_MODE_UP); EPWM_setClockPrescaler(EPWM1_BASE, EPWM_CLOCK_DIVIDER_1, EPWM_HSCLOCK_DIVIDER_1); EPWM_setActionQualifierAction(EPWM1_BASE, EPWM_AQ_OUTPUT_A, EPWM_AQ_OUTPUT_TOGGLE, EPWM_AQ_OUTPUT_ON_TIMEBASE_PERIOD); // EPWM_AQ_OUTPUT_ON_TIMEBASE_UP_CMPA); EPWM_setActionQualifierAction(EPWM1_BASE, EPWM_AQ_OUTPUT_B, EPWM_AQ_OUTPUT_TOGGLE, EPWM_AQ_OUTPUT_ON_TIMEBASE_PERIOD); // EPWM_AQ_OUTPUT_ON_TIMEBASE_UP_CMPB); #ifndef JIAKAI // // Configure SOCA signal // // EPWM_setADCTriggerSource(EPWM1_BASE, EPWM_SOC_A, EPWM_SOC_TBCTR_U_CMPA); EPWM_setADCTriggerEventPrescale(EPWM1_BASE, EPWM_SOC_A, 1); #endif // // Enable sync and clock to PWM // SysCtl_enablePeripheral(SYSCTL_PERIPH_CLK_TBCLKSYNC); } // // End of file //
主要更改如下(代码中标记为"JAIKAI")：
1、 将 Sdfm1.CH1 GPIO 更改为 GPIO16和 GPIO17。
2.更改 PWM1以生成2MHz 50/50占空比(PWM1A 为 Sdfm1.CH1和 AMC1306EVM 提供时钟)。
我运行代码、但程序永远不会进入中断例程 sdfmDR1ISR 和 sdfm1ErrorISR。
如果 PWM1未连接到 GPIO17、程序进入 sdfmErrorISR、但仍然不进入 sdfmDR1ISR。
谢谢、
Jiakai
