Other Parts Discussed in Thread: AMC1306EVM, C2000WARE, CDCE906, AMC1306M25
Good morning.
I was wondering if I can get some advice about the problem I meet with.
The final goal is to operate the TIDA-00080 reference design.
First, I tried to investigate the performance with AMC1306EVM.
I used the clock signal that I made from PWM in MCU(F280049).
I also used the modified example code for the SDFM (C2000Ware_4_01_00_00\driverlib\f28004x\examples\sdfm\sdfm_ex1_filter_sync_cpuread.c)
In this case, I could see the clock signal, data signal, and filter results on CCS debug.
Second, I have investigated the TIDA-00080 design. I got the PCB from the file, and most of the components were assembled(not including the FPGA part)
Also reconfigured the CDCE906 register and I could get the clock signal from there.
At this moment, I could see the clock signal as an input of the AMC1306, and the Data signal as an output of the AMC1306 ic chip.
Here is the waveform that I get.
The green pulse is the clock signal on pin 7(CLKIN on AMC1306M25), 10[MHz]
The blue pulse is the data signal on pin 6(DOUT on AMC1306M25)
In the summary, I can get the proper signal on the SDFM side.
The problem is on the MCU side. I couldn't get the filter result on debug session. It is shown that the value of all 0.
So I investigated the code and then I could get the flag on MF1 is set.
In the technical reference manual, it is said that "Modulator failures (MFx) are generated when SD-Cx goes missing."
I checked the GPBDAT/GPIO49 which I assigned as a SD1_C1, and I could see the alternating value(0 to 1) in real-time.
So I thought "the clock is not missing". But still, the MF1 bit is set and stuck at that(Line 329 on the code I attached) point.
I could find the thread related to this problem on "e2e.ti.com/.../tms320f28379d-using-sdfm-with-amc1305-evm"
But the author of that thread used the PWM as a clock signal. But I have used an external signal so I couldn't follow the solution on that thread.
In this case, what can I check for the proper interrupt of SDFM?
I attached the code below for your information. I didn't use the GUI and Firmware for the TIDA-00080 cause I don't need that function.
Thank you for your help.
Regards.
//###########################################################################
//
// FILE: sdfm_ex1_filters.c
//
// TITLE: SDFM Filter sync CPU Example.
//
//! \addtogroup driver_example_list
//! <h1> SDFM Filter Sync CPU</h1>
//!
//! In this example, SDFM filter data is read by CPU in SDFM ISR routine. The
//! SDFM configuration is shown below:
//! - SDFM used in this example - SDFM1
//! - Input control mode selected - MODE0
//! - 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 = 128
//! - All the 4 filters are synchronized by using MFE
//! (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 8 bits for
//! Sinc3 filter with OSR = 128
//! - 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.
//!
//
//###########################################################################
//
// $Release Date: $
// $Copyright:
// Copyright (C) 2013-2022 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
//
// Globals
//
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");
//
// Defines
//
#define SDFM_FILTER_ENABLE 0x2U
//
// Function Prototypes
//
void configureSDFMPins(void);
void done(void);
__interrupt void sdfm1ISR(void);
__interrupt void sdfm2ISR(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_SD1, sdfm1ISR);
Interrupt_register(INT_SD2, sdfm2ISR);
//
// Enable SDFM1 amd SDFM2 interrupts
//
Interrupt_enable(INT_SD1);
Interrupt_enable(INT_SD2);
//
// Input Control Unit
//
// Configure Input Control Unit: Modulator Clock rate = Modulator data rate
//
SDFM_setupModulatorClock(SDFM1_BASE, SDFM_FILTER_1,
SDFM_MODULATOR_CLK_EQUAL_DATA_RATE);
SDFM_setupModulatorClock(SDFM1_BASE, SDFM_FILTER_2,
SDFM_MODULATOR_CLK_EQUAL_DATA_RATE);
SDFM_setupModulatorClock(SDFM1_BASE, SDFM_FILTER_3,
SDFM_MODULATOR_CLK_EQUAL_DATA_RATE);
SDFM_setupModulatorClock(SDFM1_BASE, SDFM_FILTER_4,
SDFM_MODULATOR_CLK_EQUAL_DATA_RATE);
//
// Comparator Unit - over and under value threshold settings
//
hlt = 0x7FFF;
llt = 0x0000;
//
// Configure Comparator Unit's comparator filter type and comparator's
// OSR value, higher threshold, lower threshold
//
SDFM_configComparator(SDFM1_BASE,
(SDFM_FILTER_1 | SDFM_FILTER_SINC_3 | SDFM_SET_OSR(32)),
(SDFM_GET_LOW_THRESHOLD(llt) | SDFM_GET_HIGH_THRESHOLD(hlt)));
SDFM_configComparator(SDFM1_BASE,
(SDFM_FILTER_2 | SDFM_FILTER_SINC_3 | SDFM_SET_OSR(32)),
(SDFM_GET_LOW_THRESHOLD(llt) | SDFM_GET_HIGH_THRESHOLD(hlt)));
SDFM_configComparator(SDFM1_BASE,
(SDFM_FILTER_3 | SDFM_FILTER_SINC_3 | SDFM_SET_OSR(32)),
(SDFM_GET_LOW_THRESHOLD(llt) | SDFM_GET_HIGH_THRESHOLD(hlt)));
SDFM_configComparator(SDFM1_BASE,
(SDFM_FILTER_4 | SDFM_FILTER_SINC_3 | SDFM_SET_OSR(32)),
(SDFM_GET_LOW_THRESHOLD(llt) | SDFM_GET_HIGH_THRESHOLD(hlt)));
//
// Data Filter Unit
//
// Configure Data Filter Unit - filter type, OSR value and
// enable / disable data filter
//
SDFM_configDataFilter(SDFM1_BASE, (SDFM_FILTER_1 | SDFM_FILTER_SINC_3 |
SDFM_SET_OSR(128)), (SDFM_DATA_FORMAT_16_BIT | SDFM_FILTER_ENABLE |
SDFM_SHIFT_VALUE(0x0007))); //0x0008
SDFM_configDataFilter(SDFM1_BASE, (SDFM_FILTER_2 | SDFM_FILTER_SINC_3 |
SDFM_SET_OSR(128)), (SDFM_DATA_FORMAT_16_BIT | SDFM_FILTER_ENABLE |
SDFM_SHIFT_VALUE(0x0007)));
SDFM_configDataFilter(SDFM1_BASE, (SDFM_FILTER_3 | SDFM_FILTER_SINC_3 |
SDFM_SET_OSR(128)), (SDFM_DATA_FORMAT_16_BIT | SDFM_FILTER_ENABLE |
SDFM_SHIFT_VALUE(0x0007)));
SDFM_configDataFilter(SDFM1_BASE, (SDFM_FILTER_4 | SDFM_FILTER_SINC_3 |
SDFM_SET_OSR(128)), (SDFM_DATA_FORMAT_16_BIT | SDFM_FILTER_ENABLE |
SDFM_SHIFT_VALUE(0x0007)));
//
// 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(SDFM1_BASE);
//
// PWM11.CMPC, PWM11.CMPD, PWM12.CMPC and PWM12.CMPD signals cannot synchronize
// the filters. This option is not being used in this example.
//
SDFM_disableExternalReset(SDFM1_BASE, SDFM_FILTER_1);
SDFM_disableExternalReset(SDFM1_BASE, SDFM_FILTER_2);
SDFM_disableExternalReset(SDFM1_BASE, SDFM_FILTER_3);
SDFM_disableExternalReset(SDFM1_BASE, SDFM_FILTER_4);
//
// 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 data filter acknowledge
//
SDFM_enableInterrupt(SDFM1_BASE, SDFM_FILTER_1,
(SDFM_MODULATOR_FAILURE_INTERRUPT |
SDFM_DATA_FILTER_ACKNOWLEDGE_INTERRUPT));
/*
SDFM_enableInterrupt(SDFM1_BASE, SDFM_FILTER_2,
(SDFM_MODULATOR_FAILURE_INTERRUPT |
SDFM_DATA_FILTER_ACKNOWLEDGE_INTERRUPT));
SDFM_enableInterrupt(SDFM1_BASE, SDFM_FILTER_3,
(SDFM_MODULATOR_FAILURE_INTERRUPT |
SDFM_DATA_FILTER_ACKNOWLEDGE_INTERRUPT));
SDFM_enableInterrupt(SDFM1_BASE, SDFM_FILTER_4,
(SDFM_MODULATOR_FAILURE_INTERRUPT |
SDFM_DATA_FILTER_ACKNOWLEDGE_INTERRUPT));
*/
SDFM_disableInterrupt(SDFM1_BASE, SDFM_FILTER_1,
(SDFM_HIGH_LEVEL_THRESHOLD_INTERRUPT |
SDFM_LOW_LEVEL_THRESHOLD_INTERRUPT));
SDFM_disableInterrupt(SDFM1_BASE, SDFM_FILTER_2,
(SDFM_HIGH_LEVEL_THRESHOLD_INTERRUPT |
SDFM_LOW_LEVEL_THRESHOLD_INTERRUPT));
SDFM_disableInterrupt(SDFM1_BASE, SDFM_FILTER_3,
(SDFM_HIGH_LEVEL_THRESHOLD_INTERRUPT |
SDFM_LOW_LEVEL_THRESHOLD_INTERRUPT));
SDFM_disableInterrupt(SDFM1_BASE, SDFM_FILTER_4,
(SDFM_HIGH_LEVEL_THRESHOLD_INTERRUPT |
SDFM_LOW_LEVEL_THRESHOLD_INTERRUPT));
//
// Enable master interrupt so that any of the filter interrupts can trigger
// by SDFM interrupt to CPU
//
SDFM_enableMasterInterrupt(SDFM1_BASE);
//
// Enable Global Interrupt (INTM) and realtime interrupt (DBGM)
//
EINT;
ERTM;
//
// Wait for an interrupt
//
while(1);
}
//
// sdfm1ISR - SDFM 1 ISR
//
__interrupt void sdfm1ISR(void)
{
static uint16_t loopCounter1 = 0;
SDFM_setOutputDataFormat(SDFM1_BASE, SDFM_FILTER_1,
SDFM_DATA_FORMAT_16_BIT);
SDFM_setOutputDataFormat(SDFM1_BASE, SDFM_FILTER_2,
SDFM_DATA_FORMAT_16_BIT);
SDFM_setOutputDataFormat(SDFM1_BASE, SDFM_FILTER_3,
SDFM_DATA_FORMAT_16_BIT);
SDFM_setOutputDataFormat(SDFM1_BASE, SDFM_FILTER_4,
SDFM_DATA_FORMAT_16_BIT);
if(loopCounter1 >= MAX_SAMPLES)
{
//
// Reset the counter. Add breakpoint at below statement to view the
// filter results in graph view.
//
loopCounter1 = 0;
// //
// // Software breakpoint to view results.
// // Hit run again to get updated conversions.
// // Uncomment to halt the execution once buffer is full.
// //
// ESTOP0;
}
//
// Read SDFM flag register (SDIFLG)
//
while((HWREG(SDFM1_BASE + SDFM_O_SDIFLG) & 0x1000) != 0x1000) //0xF000U
{
}
//
// Read each SDFM filter output and store it in respective filter
// result array
//
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);
//
// 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);
}
//
// sdfm2ISR - SDFM 2 ISR
//
__interrupt void sdfm2ISR(void)
{
uint32_t sdfmReadFlagRegister = 0;
static uint16_t loopCounter1 = 0;
SDFM_setOutputDataFormat(SDFM2_BASE, SDFM_FILTER_1,
SDFM_DATA_FORMAT_16_BIT);
SDFM_setOutputDataFormat(SDFM2_BASE, SDFM_FILTER_2,
SDFM_DATA_FORMAT_16_BIT);
SDFM_setOutputDataFormat(SDFM2_BASE, SDFM_FILTER_3,
SDFM_DATA_FORMAT_16_BIT);
SDFM_setOutputDataFormat(SDFM2_BASE, SDFM_FILTER_4,
SDFM_DATA_FORMAT_16_BIT);
//
// Read SDFM flag register (SDIFLG)
//
sdfmReadFlagRegister = HWREG(SDFM2_BASE + SDFM_O_SDIFLG);
if(loopCounter1 < MAX_SAMPLES)
{
//
// Read each SDFM filter output and store it in respective filter
// result array
//
filter1Result[loopCounter1] =
(int16_t)SDFM_getFilterData(SDFM2_BASE, SDFM_FILTER_1);
filter2Result[loopCounter1] =
(int16_t)SDFM_getFilterData(SDFM2_BASE, SDFM_FILTER_2);
filter3Result[loopCounter1] =
(int16_t)SDFM_getFilterData(SDFM2_BASE, SDFM_FILTER_3);
filter4Result[loopCounter1++] =
(int16_t)SDFM_getFilterData(SDFM2_BASE, SDFM_FILTER_4);
//
// Clear SDFM flag register
//
SDFM_clearInterruptFlag(SDFM2_BASE,
(SDFM_MASTER_INTERRUPT_FLAG | 0xFFFF));
sdfmReadFlagRegister = HWREG(SDFM2_BASE + SDFM_O_SDIFLG);
if(sdfmReadFlagRegister != 0x0)
{
ESTOP0;
}
}
else
{
ESTOP0;
done();
}
//
// 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;
for(pin = 48; pin <= 55; 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_48_SD1_D1);
GPIO_setPinConfig(GPIO_49_SD1_C1);
GPIO_setPinConfig(GPIO_50_SD1_D2);
GPIO_setPinConfig(GPIO_51_SD1_C2);
GPIO_setPinConfig(GPIO_52_SD1_D3);
GPIO_setPinConfig(GPIO_53_SD1_C3);
GPIO_setPinConfig(GPIO_54_SD1_D4);
GPIO_setPinConfig(GPIO_55_SD1_C4);
/*
for(pin = 28; pin <= 29; 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_28_SD2_D3);
GPIO_setPinConfig(GPIO_29_SD2_C3);
*/
}
//
// done - Function to halt debugger and stop application
//
void done(void)
{
asm(" ESTOP0");
for(;;);
}
//
// End of file
//
