recover from waiting trigger

src/drivers/elphel/framepars.c

@@ -1628,6 +1628,7 @@ loff_t framepars_lseek(struct file * file, loff_t offset, int orig)
 					break;
 				case LSEEK_DMA_INIT:                    // initialize ETRAX DMA (normally done in sensor_common.c at driver init
 				    dev_dbg(g_devfp_ptr, "LSEEK_DMA_INIT\n");
+				    trigger_restart  (); // LSEEK_DMA_INIT is unused
 					//x313_dma_init();
 					break;
 				case LSEEK_DMA_STOP: // stop DMA

src/drivers/elphel/pgm_functions.c

@@ -365,6 +365,11 @@ int pgm_detectsensor   (int sensor_port,               ///< sensor port number (
 ///< @return OK - 0, <0 - error
 {
     x393_camsync_mode_t camsync_mode = {.d32=0};
+    x393_camsync_io_t camsync_src =      {.d32=0x55555}; // all disabled (use internal)
+    x393_camsync_io_t camsync_dst =      {.d32=0x55555}; // all disable - nothing to output
+
+// Setting trigger input, output and preriod to off
+
     int was_sensor_freq = 0; // 90000000; // getClockFreq(1);
     int qperiod;
     int i2cbytes;
@@ -411,6 +416,14 @@ int pgm_detectsensor   (int sensor_port,               ///< sensor port number (
 //    camsync_mode.ext_set =  1;
     x393_camsync_mode (camsync_mode);
 
+
+// Set inactive state to all I/O) and period:
+    x393_camsync_trig_src(camsync_src);
+    x393_camsync_trig_dst(camsync_dst);
+    set_x393_camsync_trig_period(0);
+
+
+
     //     dev_dbg(g_dev_ptr,"trying MT9P001\n");
     //      mt9x001_pgm_detectsensor(sensor_port, sensor,  thispars, prevpars, frame16);  // try Micron 5.0 Mpixel - should return sensor type
 

src/drivers/elphel/sensor_common.c

@@ -996,6 +996,18 @@ void sensor_interrupts (int on,   ///< 0 -interrupt disable, 1 - interrupt enabl
     x393_cmdframeseq_ctrl(cmdframeseq_mode, chn);
 }
 
+/** Recover from waiting trigger - internal FPGA or external by re-writing current period to the register in immediate mode
+ * If the period was 0 (stopped), use 1 (single) */
+void trigger_restart(void)
+{
+    u32 period = get_x393_camsync_trig_period();
+    if (!period) period = 1;
+    set_x393_camsync_trig_period(period);
+    dev_dbg(g_dev_ptr, "Reset trigger period in immediate mode = %d (0x%x)\n", (int) period, (int) period);
+}
+
+
+
 int sequencer_stop_run_reset(int chn,  ///< Sensor port
                              int cmd)  ///< Command: SEQ_CMD_STOP=0 - stop, SEQ_CMD_RUN=1 - run, SEQ_CMD_RESET=2 - reset
                                        ///< @return always 0

src/drivers/elphel/sensor_common.h

@@ -52,6 +52,8 @@ int init_compressor_dma(int chn_mask, int reset);
 void reset_compressor(unsigned int chn);
 void compressor_interrupts (int on, int chn);
 void sensor_interrupts     (int on, int chn);
+void trigger_restart       (void);
+
 int sequencer_stop_run_reset(int chn, int cmd);
 struct sensorproc_t * copy_sensorproc (int sensor_port, struct sensorproc_t * copy);