API documentation complete, closing #74 and closing #73

2025-07-20 04:43:21 +00:00 · 2017-08-09 22:54:20 -05:00
parent 2247e9d234
commit 4670e44758
4 changed files with 338 additions and 6 deletions
--- a/docs/gpio.md
+++ b/docs/gpio.md
@ -18,4 +18,320 @@ Enable/Disable the Debug
  GPIO.toggle_debug()
  ```

+### is_chip_pro()
+Function to report to the calling script if the SBC is a CHIP or a CHIP Pro
+
+* Parameters
+  
+  None
+
+* Returns
+
+  int - 1 for CHIP Pro, 0 for CHIP
+
+* Examples
+
+  ```python
+  is_chip_pro = GPIO.is_chip_pro()
+  ```
+
+### setmode(mode)
+Dummy function to maintain backwards compatibility with Raspberry Pi scripts.
+
+### setup(channel, direction, pull_up_down=PUD_OFF, initial=None)
+Setup a GPIO pin.  If pin is already configure, it will reconfigure.
+
+* Parameters
+  
+  channel - GPIO pin
+  direction - INPUT or OUTPUT
+  pull_up_down - PUD_OFF, PUD_UP, PUD_DOWN (optional)
+  initial - Initial value for an OUTPUT pin (optional)
+
+* Returns
+
+  None
+
+* Examples
+
+  ```python
+  GPIO.setup("CSID0", GPIO.IN)
+  GPIO.setup("CSID3", GPIO.OUT, initial=1)
+  GPIO.setup("CSID2", GPIO.IN, GPIO.PUD_UP)
+  ```
+
+### cleanup(channel)
+Cleanup GPIO.  If not channel input, all GPIO will be cleaned up
+
+* Parameters
+  
+  channel - GPIO pin (optional)
+
+* Returns
+
+  None
+
+* Examples
+
+  ```python
+  GPIO.cleanup()
+  GPIO.cleanup("CSID3")
+  ```
+
+### output(channel, value)
+Write a value to a GPIO pin.
+
+* Parameters
+  
+  channel - GPIO Pin
+  value - HIGH, LOW, 0, 1
+
+* Returns
+
+  None
+
+* Examples
+
+  ```python
+  GPIO.output("XIO-P7", GPIO.HIGH)
+  GPIO.output("XIO-P7", GPIO.LOW)
+  GPIO.output("CSID0", 1)
+  GPIO.output("CSID0", 0)
+  ```
+
+### input(channel)
+Read a GPIO pin once.
+
+* Parameters
+  
+  channel - GPIO Pin
+
+* Returns
+
+  value - current value of the GPIO pin
+
+* Examples
+
+  ```python
+  value = GPIO.input("XIO-P7")
+  ```
+
+### read_byte(channel)
+Read a GPIO pin multiple times to fill up 8 bits.
+
+* Parameters
+  
+  channel - GPIO Pin
+
+* Returns
+
+  int - 8 bit value of the GPIO pin
+
+* Examples
+
+  ```python
+  bits = GPIO.read_byte("XIO-P7")
+  ```
+
+### read_word(channel)
+Read a GPIO pin multiple times to fill up 16 bits.
+
+* Parameters
+  
+  channel - GPIO Pin
+
+* Returns
+
+  word - 16 bit value of the GPIO pin
+
+* Examples
+
+  ```python
+  bits = GPIO.read_word("XIO-P7")
+  ```
+
+### add_event_detect(channel, edge, callback=None, bouncetime=0)
+Add event detection to a pin. Refer to main table for which pins are able to use edge detection.
+
+* Parameters
+  
+  channel - GPIO Pin
+  edge - edge: RISING_EDGE, FALLING_EDGE, BOTH_EDGE
+  callback - callback function to be run when edge is detected (optional)
+  bouncetime - level debounce time period in ms (optional)
+
+* Returns
+
+  None
+
+* Examples
+
+  ```python
+  GPIO.add_event_detect("XIO-P7", GPIO.RISING_EDGE)
+  GPIO.add_event_detect("AP-EINT3", GPIO.RISING_EDGE, mycallback)
+  GPIO.add_event_detect("XIO-P7", GPIO.FALLING_EDGE, bouncetime=30)
+  GPIO.add_event_detect("XIO-P7", GPIO.RISING_EDGE, mycallback, 45)
+  ```
+
+### remove_event_detect(channel)
+Remove a pins event detection. Refer to main table for which pins are able to use edge detection.
+
+* Parameters
+  
+  channel - GPIO Pin
+
+* Returns
+
+  None
+
+* Examples
+
+  ```python
+  GPIO.remove_event_detect("XIO-P7")
+  ```
+
+### event_detected(channel)
+Function to determine if an event was detected on a pin.  Pin must have an event detect added via add_event_detect() prior to calling this function. Refer to main table for which pins are able to use edge detection.
+
+* Parameters
+  
+  channel - GPIO Pin
+
+* Returns
+
+  boolean - True if event was detected
+
+* Examples
+
+  ```python
+  have_event = GPIO.event_detected("XIO-P5")
+  ```
+
+### add_event_callback(channel, callback, bouncetime=0)
+Add callback function to a pin that has been setup for edge detection. Refer to main table for which pins are able to use edge detection.
+
+* Parameters
+  
+  channel - GPIO Pin
+  callback - callback function to be run when edge is detected
+  bouncetime - level debounce time period in ms (optional)
+
+* Returns
+
+  None
+
+* Examples
+
+  ```python
+  GPIO.add_event_callback("AP-EINT3", mycallback)
+  GPIO.add_event_callback("XIO-P7", mycallback, 45)
+  ```
+
+### wait_for_edge(channel, edge)
+Wait for an edge to be detected.  This is a blocking function. Refer to main table for which pins are able to use edge detection.
+
+* Parameters
+  
+  channel - GPIO Pin
+  edge - edge: RISING_EDGE, FALLING_EDGE, BOTH_EDGE
+
+* Returns
+
+  None
+
+* Examples
+
+  ```python
+  GPIO.wait_for_edge("XIO-P3", GPIO.RISING_EDGE)
+  GPIO.wait_for_edge("AP-EINT3", GPIO.BOTH_EDGE)
+  GPIO.wait_for_edge("I2S-DI", GPIO.FALLING_EDGE)
+  ```
+
+### gpio_function(channel)
+Function to report get a GPIO Pins directioj
+
+* Parameters
+  
+  channel - GPIO Pin
+
+* Returns
+
+  int - GPIO Pin direction
+
+* Examples
+
+  ```python
+  funct = GPIO.gpio_function("CSID0")
+  ```
+
+### setwarnings(state)
+Function to enable/disable warning print outs. This may or may not work properly.  toggle_debug() is a better bet.
+
+* Parameters
+  
+  state - 1 for enable, 0 for disable
+
+* Returns
+
+  None
+
+* Examples
+
+  ```python
+  GPIO.set_warnings(1)
+  ```
+
+### get_gpio_base()
+Function to get the SYSFS base value for the XIO pins on a CHIP
+
+* Parameters
+  
+  None
+
+* Returns
+
+  int - sysfs base of the XIO, returns -1 on a CHIP Pro
+
+* Examples
+
+  ```python
+  base = GPIO.get_gpio_base()
+  ```
+
+### selftest(value)
+Function to perform a selftest on the GPIO module
+
+* Parameters
+  
+  value - a value
+
+* Returns
+
+  int - the input value
+
+* Examples
+
+  ```python
+  rtn = GPIO.selftest(0)
+  ```
+
+### direction(channel, direction)
+Function to set the direction of an exported GPIO pin
+
+* Parameters
+  
+  channel - GPIO Pin
+  direction - Direction Pin is to take
+
+* Returns
+
+  None
+
+* Examples
+
+  ```python
+  GPIO.set_direction("XIO-P0", GPIO.OUT)
+  GPIO.set_direction("XIO-P1", GPIO.IN)
+  ```
+
 [home](./index.md)