I'm working on the ESP32cam module. It works fine until I try to define an interrupt on GPIO. My code is something like
#define SYNC_TRIG 14
void IRAM_ATTR Sync_Triggered( void )
{
// Do some stuff
return;
}
void Camera_Setup( void )
{
// Turn-off the 'brownout detector'
WRITE_PERI_REG( RTC_CNTL_BROWN_OUT_REG, 0 );
// OV2640 camera module
camera_config_t config;
config.ledc_channel = LEDC_CHANNEL_0;
config.ledc_timer = LEDC_TIMER_0;
config.pin_d0 = Y2_GPIO_NUM;
config.pin_d1 = Y3_GPIO_NUM;
config.pin_d2 = Y4_GPIO_NUM;
config.pin_d3 = Y5_GPIO_NUM;
config.pin_d4 = Y6_GPIO_NUM;
config.pin_d5 = Y7_GPIO_NUM;
config.pin_d6 = Y8_GPIO_NUM;
config.pin_d7 = Y9_GPIO_NUM;
config.pin_xclk = XCLK_GPIO_NUM;
config.pin_pclk = PCLK_GPIO_NUM;
config.pin_vsync = VSYNC_GPIO_NUM;
config.pin_href = HREF_GPIO_NUM;
config.pin_sscb_sda = SIOD_GPIO_NUM;
config.pin_sscb_scl = SIOC_GPIO_NUM;
config.pin_pwdn = PWDN_GPIO_NUM;
config.pin_reset = RESET_GPIO_NUM;
config.xclk_freq_hz = 20000000;
config.pixel_format = PIXFORMAT_JPEG;
if ( psramFound() )
{
Serial.println( "PSRAM found. Frame size FRAMESIZE_UXGA (1600x1200)" );
config.frame_size = FRAMESIZE_UXGA;
config.jpeg_quality = 10;
config.fb_count = 2;
}
else
{
Serial.println( "PSRAM not found. Frame size FRAMESIZE_SVGA (800x600)" );
config.frame_size = FRAMESIZE_SVGA;
config.jpeg_quality = 12;
config.fb_count = 1;
}
// Camera init
esp_err_t err = esp_camera_init( &config );
if ( err != ESP_OK )
{
Serial.printf( "Camera init failed with error 0x%x", err );
ESP.restart();
return;
}
sensor_t * s = esp_camera_sensor_get();
// initial sensors are flipped vertically and colors are a bit saturated
if ( s->id.PID == OV3660_PID )
{
s->set_vflip( s, 1 ); // flip it back
s->set_brightness( s, 0 ); // up the brightness just a bit
s->set_saturation( s, 0 ); // lower the saturation
}
}
void setup()
{
pinMode( SYNC_TRIG, INPUT_PULLDOWN );
attachInterrupt( SYNC_TRIG, Sync_Triggered, RISING );
Serial.begin( 115200 );
// CAMERA SETUP
Camera_Setup();
}
void loop()
{
}
If I remove the line
attachInterrupt( SYNC_TRIG, Sync_Triggered, RISING );
it works fine and I can take picture without problems. But with the line above I get the error
ets Jun 8 2016 00:22:57
rst:0x10 (RTCWDT_RTC_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:2
load:0x3fff0018,len:4
load:0x3fff001c,len:1044
load:0x40078000,len:10124
load:0x40080400,len:5828
entry 0x400806a8
ÿPSRAM found. Frame size FRAMESIZE_UXGA (1600x1200)
[E][camera.c:1327] camera_init(): gpio_install_isr_service failed (105)
[E][camera.c:1406] esp_camera_init(): Camera init failed with error 0x105
It seems the attachInterrupt() function corrupts the initializzation of the camera. If I call it after the Camera_Setup() I get
ets Jun 8 2016 00:22:57
rst:0x10 (RTCWDT_RTC_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:2
load:0x3fff0018,len:4
load:0x3fff001c,len:1044
load:0x40078000,len:10124
load:0x40080400,len:5828
entry 0x400806a8
ÿPSRAM found. Frame size FRAMESIZE_UXGA (1600x1200)
Guru Meditation Error: Core 1 panic'ed (LoadProhibited). Exception was unhandled.
Core 1 register dump:
PC : 0x4010ae1b PS : 0x00060e30 A0 : 0x800d3bc2 A1 : 0x3ffb1f10
A2 : 0x00000000 A3 : 0x00000000 A4 : 0x40081300 A5 : 0x00000000
A6 : 0x3ffc17d0 A7 : 0x0000000a A8 : 0x800fde26 A9 : 0x3ffb1ec0
A10 : 0x00000105 A11 : 0x0000040e A12 : 0x00000000 A13 : 0x00000000
A14 : 0x40081300 A15 : 0x00000000 SAR : 0x00000001 EXCCAUSE: 0x0000001c
EXCVADDR: 0x00000000 LBEG : 0x4008988c LEND : 0x400898a8 LCOUNT : 0xffffffff
ELF file SHA256: 0000000000000000
Backtrace: 0x4010ae1b:0x3ffb1f10 0x400d3bbf:0x3ffb1f30 0x400d3c1d:0x3ffb1f60 0x400d25e1:0x3ffb1f80 0x400d4862:0x3ffb1fb0 0x4008c49e:0x3ffb1fd0
Rebooting...
Any suggestions?