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martinheusmann edited this page Jan 8, 2017 · 7 revisions

IoT side features

  • Lasergun control: This component sits on the servo driver from the RIOT library, the following functions are available:
    • int pHAL_init(void) - this needs to be called in the beginning of every session
    • void set_h(int angle) and void set_v(int angle) can be used to set specific angles [-90°, 90°]
    • void step_{l|r|u|d}(void) - steps one single step defined by the step size (adjustable)
    • void stepn_{l|r|u|d}(void) - step n steps, each defined by the step size (adjustable)
    • void laser_on(void), void laser_off(void) and void laser_toggle(void) - controll of the laser diode (transistor on GPIO port)
    • allign_cntr(void) - will set both y- and x-axis servo to 0°, void allign_{h|v}_cntr(void) will do this for vertical and horizontal axis

Note: there is a dedicated main.c for testing the separate functions manually (pHAL folder), simply flash the demo onto the xPro board, make sure to call the 'init' function before each session.

Note2: upon replacing the servo with a different model, make sure to go over the pwm logic and check the range, as the values may differ!

  • Target control: This component extends the tests/driver_isl9125 application from the RIOT library for interrupts. Use isl29125_init() e.g. isl29125_init(&dev, TEST_ISL29125_I2C, TEST_ISL29125_IRQ_PIN, ISL29125_MODE_R, ISL29125_RANGE_10K, ISL29125_RESOLUTION_16, ISL29125_INTERRUPT_STATUS_RED, ISL29125_INTERRUPT_PERSIST_1, ISL29125_INTERRUPT_CONV_DIS, lower_threshold, higher_threshold) for initializing the isl29125. Using isl29125_init() there are the following options:

    • Set I2C Pins
    • Set external interrupt pin
    • Choose operation mode:
      • ISL29125_MODE_R for getting RED value
      • ISL29125_MODE_G for getting GREEN value
      • ISL29125_MODE_B for getting BLUE value
      • ISL29125_MODE_StandBy for getting NO value
      • ISL29125_Mode_RGB for getting ALL RGB values
      • ISL29125_MODE_RG for getting RED and GREEN values
      • ISL29125_MODE_GB for getting GREEN and BLUE values
    • Set RGB data sensing range
      • ISL29125_RANGE_10K for range 10,000
      • ISL29125_RANGE_375 for range 375
    • Set ADC resolution
      • ISL29125_RESOLUTION_12 for 12 bit
      • ISL29125_RESOLUTION_16 for 16 bit
    • Set interrupt color
      • ISL29125_INTERRUPT_STATUS_None
      • ISL29125_INTERRUPT_STATUS_RED
      • ISL29125_INTERRUPT_STATUS_GREEN
      • ISL29125_INTERRUPT_STATUS_BLUE
    • Set interrupt persist
      • ISL29125_INTERRUPT_PERSIST_1
      • ISL29125_INTERRUPT_PERSIST_2
      • ISL29125_INTERRUPT_PERSIST_4
      • ISL29125_INTERRUPT_PERSIST_8
    • Choose RGB conversion done to interrupt control
      • ISL29125_INTERRUPT_CONV_EN for conversion enabled
      • ISL29125_INTERRUPT_CONV_EN for conversion disabled
    • Set lower interrupt threshold
    • Set higher interrupt threshold

    Use the Callback function cb() for code to be executed by interrupt.

    For further information see isl29125 data sheet.

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