87 lines
2.8 KiB
ReStructuredText
87 lines
2.8 KiB
ReStructuredText
.. zephyr:code-sample:: led-xec
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:name: Breathing-blinking LED (BBLED)
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:relevant-api: led_interface
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Control a BBLED (Breathing-Blinking LED) using Microchip XEC driver.
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Overview
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********
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This sample allows to test the Microchip led-xec driver which uses the
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breathing-blinking LED (BBLED) controllers. The SoC design is fixed
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allowing each BBLED control over one specific GPIO.
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MEC15xx and MEC172x:
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- BBLED controller 0 uses GPIO 0156.
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- BBLED controller 1 uses GPIO 0157.
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- BBLED controller 2 uses GPIO 0153.
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MEC172x has a fourth instance of BBLED:
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- BBLED controller 3 uses GPIO 0035
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Test pattern
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============
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For each LEDs (one after the other):
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- Turning on
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- Turning off
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- Blinking on: 0.1 sec, off: 0.1 sec
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- Blinking on: 1 sec, off: 1 sec
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Board Jumpers
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*************
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mec172xevb_assy6906 evaluation board
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====================================
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- BBLED0: GPIO 0156.
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- Connect GPIO 0156 to board LED4 by placing a wire from JP71-11 to J47-3.
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- Make sure there are no jumpers on JP54 1-2 and JP21 4-5
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- BBLED1: GPIO 0157.
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- Connect GPIO 0156 to board LED5 by placing a wire from JP71-12 to J48-3.
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- Make sure there are no jumpers on JP54 3-4 and JP21 16-17
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- BBLED2: GPIO 0153.
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- Connect GPIO 0153 to board LED7 by placing a wire from JP71-5 to JP146-5.
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JP146-5 is connected to MEC172x VCI_OUT1 without a jumper. Force VCI_OUT1
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high by forcing VCI_IN1 high: install jumper on J55 3-4 which pulls VCI_IN1
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to the VBAT rail via a 100K pull-up. Requires VBAT power rail is connected
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to VTR or some other power source.
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- BBLED3: GPIO 0035.
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- Connect GPIO 0035 to board LED7 by placing a wire from JP67-19 to JP146-1.
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- Make sure there is no jumper on JP79 17-18.
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JP146-1 is connected to MEC172x VCI_OUT2 without a jumper. Force VCI_OUT2
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high by forcing VCI_IN2 high: install a jumper on J55 5-6 which pulls VCI_IN2
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to the VBAT rail via a 100K pull-up. Requires VBAT power rail is connected
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to VTR or some other power source.
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mec15xxevb_assy6853 evaluation board
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====================================
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- BBLED0: GPIO 0156.
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- Add jumper on JP41 1-2 to connect GPIO 0156 to board LED2
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- Remove jumper on JP31 13-14
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- BBLED1: GPIO 0157.
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- Add jumper on JP41 3-4 to connect GPIO 0157 to board LED3
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- Remove jumper on JP31 15-16
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- BBLED2: GPIO 0153.
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- Add jumper on JP41 3-4 to connect GPIO 0153 to board LED4
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- Remove jumper on JP31 17-18
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Building and Running
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********************
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This sample can be built and executed on all the boards with the LEDs connected.
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The LEDs must be correctly described in the DTS. Each breathing-blinking LED
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controller is fixed by chip design to connect to one GPIO. The bbled node must
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have its PINCTRL properties set to the correct GPIO.
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