Difference between revisions of "New image sensors for 10393"

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(→‎Developing a driver)
(→‎in device tree)
 
(3 intermediate revisions by the same user not shown)
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[[File:10393_cpu_fpga_i2c_records_table.png|thumb|700px|Fig.2 FPGA has a certain 256-line table (for all ports)]]
 
[[File:10393_cpu_fpga_i2c_records_table.png|thumb|700px|Fig.2 FPGA has a certain 256-line table (for all ports)]]
  
−
====in device tree====
+
====Device tree====
 
* record for sensor, like:
 
* record for sensor, like:
 
  <font size=1>elphel393_mt9f002: elphel393-mt9f002@0 {
 
  <font size=1>elphel393_mt9f002: elphel393-mt9f002@0 {
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  };</font>
 
  };</font>
  
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* edit '''autocampars.php''' - add a proper application
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====Add a proper application====
−
* set application through 10389's serial or more preferably through /etc/elphel393/default_10389.xml in a 10389-less setup
+
* In '''autocampars.php'''
 +
* Set application through 10389's serial or more preferably through /etc/elphel393/default_10389.xml in a 10389-less setup
  
 +
====Driver code====
 
* In ''linux-elphel/src/drivers/elphel/''  
 
* In ''linux-elphel/src/drivers/elphel/''  
 
** Create mt9f002.h and mt9f002.c
 
** Create mt9f002.h and mt9f002.c
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** mt9f002.h - fill with registers addresses (from sensor's datasheet) and other constants
 
** mt9f002.h - fill with registers addresses (from sensor's datasheet) and other constants
 
** mt9f002.c:
 
** mt9f002.c:
−
  mt9f002_par2addr table
+
  <font size=1>mt9f002_par2addr table
 
  mt9f002_pages table
 
  mt9f002_pages table
 
  mt9f002_ahead_tab - no need to edit in the beginning
 
  mt9f002_ahead_tab - no need to edit in the beginning
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  mt9f002_pgm_limitfps func
 
  mt9f002_pgm_limitfps func
 
  mt9f002_pgm_exposure func
 
  mt9f002_pgm_exposure func
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  mt9f002_pgm_triggermode func
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  mt9f002_pgm_triggermode func</font>
  
  
  
 
[[Category:393]]
 
[[Category:393]]

Latest revision as of 17:07, 16 April 2018

Description

This page describes development and testing of any new sensors for 10393 system boards. It covers a driver-less mode where python scripts are used to get the first images and the sensor driver structure.

Application notes

Driverless mode

Developing a driver

Fig.1 Sensor driver
Fig.2 FPGA has a certain 256-line table (for all ports)

Device tree

  • record for sensor, like:
elphel393_mt9f002: elphel393-mt9f002@0 {
    compatible = "elphel,elphel393-mt9f002-1.00";
};
  • record for sensor i2c address, like:
elphel393_sensor_i2c: elphel393-sensor-i2c@0 {
    compatible = "elphel,elphel393-sensor-i2c-1.00";
    /* Add known devices: name, slave address (7-bit), number of address bytes, number of data bytes, SCL frequency (kHz) */
    elphel393-sensor-i2c,i2c_devices = "mt9f002        0x10 2 2 500",
                                       "mt9p006        0x48 1 2 500",
                                       "el10359        0x08 1 2 500",
                                       "el10359_32     0x08 1 4 500",
                                       "pca9500_eeprom 0x50 1 1 100",
                                       "sensor_eeprom  0x50 1 1 100",
                                       "sensor_temp    0x18 1 2 100",
                                       "cy22393        0x69 1 1 100";
};
  • edit detected sensors:
elphel393_detect_sensors: elphel393-detect_sensors@0 {
    compatible = "elphel,elphel393-detect_sensors-1.00";
    elphel393-detect_sensors,port-mux = "none none none none"; /* "none", "detect" or "mux10359" */
    elphel393-detect_sensors,sensors =  "mt9f002", // Line per port, may contain up to 4 sensors (3 with 10359)
                                        "mt9f002",
                                        "mt9f002",
                                        "mt9f002";
};

Add a proper application

  • In autocampars.php
  • Set application through 10389's serial or more preferably through /etc/elphel393/default_10389.xml in a 10389-less setup

Driver code

  • In linux-elphel/src/drivers/elphel/
    • Create mt9f002.h and mt9f002.c
    • Add to Makefile:
obj-$(CONFIG_ELPHEL393) += mt9f002.o
    • Edit pgm_functions.c
    • mt9f002.h - fill with registers addresses (from sensor's datasheet) and other constants
    • mt9f002.c:
mt9f002_par2addr table
mt9f002_pages table
mt9f002_ahead_tab - no need to edit in the beginning
sensor_t structure - some fields are used, some - not
mt9f002_inits - registers that must be initialized
mt9f002_pgm_detectsensor func - remove mrst and read id via i2c, register other functions
mt9f002_pgm_initsensor func - applies init i2c commands, cable phase adjustment, gain table and shadow regs
mt9f002_pgm_sensorin func - this just set MT9F002_VACT_DELAY because of sensor's specifics
mt9f002_pgm_window func   - uses mt9f002_pgm_window_common
mt9f002_pgm_window_safe func - uses mt9f002_pgm_window_common
mt9f002_pgm_window_common func - change window, also sets horizontal blanking
mt9f002_pgm_gains func
mt9f002_pgm_limitfps func
mt9f002_pgm_exposure func
mt9f002_pgm_triggermode func
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