问题描述
我正在尝试记录Li-Fi项目的光强度值。
这是我的代码：
#include <soc/sens_reg.h>
#include <soc/sens_struct.h>
#include <driver/adc.h>
#include <SD.h>
#define ADC1_GPIO36_CHANNEL ADC1_CHANNEL_0
#include <adc_channel.h>
const char filename1[] = "/part1.dat";
const char filename2[] = "/part2.dat";
File file1,file2;
int local_adc1_read(int channel) {
uint16_t adc_value;
SENS.sar_meas_start1.sar1_en_pad = (1 << channel); // Only one channel is selected
while (SENS.sar_slave_addr1.meas_status != 0)
;
SENS.sar_meas_start1.meas1_start_sar = 0;
SENS.sar_meas_start1.meas1_start_sar = 1;
while (SENS.sar_meas_start1.meas1_done_sar == 0)
;
adc_value = SENS.sar_meas_start1.meas1_data_sar;
return adc_value;
}
#define ADC_SAMPLES_COUNT 1000
int16_t abuf[ADC_SAMPLES_COUNT];
int16_t abufPos = 0;
portMUX_TYPE DRAM_ATTR timerMux = portMUX_INITIALIZER_UNLOCKED;
TaskHandle_t complexHandlerTask;
hw_timer_t * adcTimer = NULL; // Our timer
void complexHandler(void *param) {
timerAlarmdisable(adcTimer);
timerDetachInterrupt(adcTimer);
timerEnd(adcTimer);
adcTimer = NULL;
file1 = SD.open(filename1,FILE_WRITE);
file2 = SD.open(filename2,FILE_WRITE);
file1.write((const byte*)abuf,abufPos);
file2.write((const byte*)abuf,abufPos);
file1.close();
file2.close();
}
int counter;
void IRAM_ATTR onTimer() {
portENTER_CRITICAL_ISR(&timerMux);
abuf[abufPos++] = local_adc1_read(ADC1_CHANNEL_0);
//abuf[abufPos++] = adc1_get_raw(ADC1_CHANNEL_0);
if (abufPos >= 8) {
if (abuf[abufPos-7] ==
abuf[abufPos-6] ==
abuf[abufPos-5] ==
abuf[abufPos-4] ==
abuf[abufPos-3] ==
abuf[abufPos-2] ==
abuf[abufPos-1] ==
abuf[abufPos])
{
// Notify adcTask that the buffer is full.
BaseType_t xHigherPriorityTaskWoken = pdFALSE;
vTaskNotifyGiveFromISR(complexHandlerTask,&xHigherPriorityTaskWoken);
if (xHigherPriorityTaskWoken) {
portYIELD_FROM_ISR();
}
}
portEXIT_CRITICAL_ISR(&timerMux);
}
}
void setup() {
setcpuFrequencyMhz(240);
xTaskCreate(complexHandler,"Handler Task",8192,NULL,1,&complexHandlerTask);
adcTimer = timerBegin(3,80,true); // 80 MHz / 80 = 1 MHz hardware clock for easy figuring
timerAttachInterrupt(adcTimer,&onTimer,true); // Attaches the handler function to the timer
timerAlarmWrite(adcTimer,100,true); // Interrupts when counter == 45,i.e. 22.222 times a second
timerAlarmEnable(adcTimer);
Serial.begin(115200);
pinMode(2,OUTPUT);
//pinMode(36,INPUT);
if (!SD.begin())
Serial.println("SD begin Failed");
while(!SD.begin()) {
Serial.print(".");
//delay(500);
SD.remove(filename1);
SD.remove(filename2);
}
}
void loop() {
}
我收到此错误：
Guru Meditation Error: Core 0 panic'ed (LoadProhibited). Exception was unhandled.
rst:0xc (SW_cpu_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0,SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:dio,clock div:1
load:0x3fff0018,len:4
load:0x3fff001c,len:1100
load:0x40078000,len:10900
load:0x40080400,len:6388
entry 0x400806b4
Guru Meditation Error: Core 0 panic'ed (LoadProhibited). Exception was unhandled.
Core 0 register dump:
PC : 0x400f095f PS : 0x00060030 A0 : 0x800d1019 A1 : 0x3ffb3f80
A2 : 0x00000000 A3 : 0x3ffb2080 A4 : 0x00000020 A5 : 0x80000020
A6 : 0x00000000 A7 : 0x00000000 A8 : 0x00000005 A9 : 0x00000020
A10 : 0x00000020 A11 : 0x3ffbc0d0 A12 : 0x80087259 A13 : 0x3ffbc0d0
A14 : 0x00000000 A15 : 0x00000000 SAR : 0x00000000 EXCCAUSE: 0x0000001c
EXCVADDR: 0x00000000 LBEG : 0x00000000 LEND : 0x00000000 LCOUNT : 0x00000000
ELF file SHA256: 0000000000000000
Backtrace: 0x400f095f:0x3ffb3f80 0x400d1016:0x3ffb3fa0 0x40088269:0x3ffb3fe0
我尝试使用一个大型应用程序（3 MB）降低中断频率，将cpu时钟提高到240Hz，但没有任何变化。
通过注释
vTaskNotifyGiveFromISR(complexHandlerTask,&xHigherPriorityTaskWoken);
和
xTaskCreate(complexHandler,&complexHandlerTask);
现在错误是
还有一些内核1和内核0的寄存器转储。循环中没有任何变化。
解决方法
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