From: kent <fuzzballz@comcast.net>
Date: Sat, 15 Aug 2020 20:11:48 +0000 (-0700)
Subject: i2c function verified.  Documentation updated.
X-Git-Tag: 5.3.0^2~1^2
X-Git-Url: https://git.ayoreis.com/Adafruit_Blinka-hackapet.git/commitdiff_plain/19e15050e21a7337885d27e756abd795e7ffb238?hp=--cc

i2c function verified.  Documentation updated.

i2c functions using I2C0_SCL, I2C0_SDA or I2C1_SCL, I2C1_SDA as   SCl, SDA.

USART pin removed.  According to documentation embeded linux should use pyserial not busio!

pylint give a message for i2cPorts as not conforming to Capitalization standard, but this the same for all the other examples and the way the other programs expect it.
---

19e15050e21a7337885d27e756abd795e7ffb238
diff --git a/src/adafruit_blinka/board/udoo_x86ultra.py b/src/adafruit_blinka/board/udoo_x86ultra.py
index d0cb8f0..b25c92b 100644
--- a/src/adafruit_blinka/board/udoo_x86ultra.py
+++ b/src/adafruit_blinka/board/udoo_x86ultra.py
@@ -9,6 +9,11 @@ The other is based on the hardware manual:
 https://udoo.org/download/files/UDOO_X86/Doc/UDOO_X86II_MANUAL.pdf
 
 This will use the D system based on the diagram in the user guide
+
+i2c use i2c(board.I2C0_SCL, board_I2C0_SDA) or i2c(board.I2C1_SCL, board_I2C1_SDA)
+for the i2c(board.SCL, board.SCL) in the examples
+
+UART use pyserial not busio
 """
 
 from adafruit_blinka.microcontroller.pentium.n3710 import pin
diff --git a/src/adafruit_blinka/microcontroller/pentium/n3710/pin.py b/src/adafruit_blinka/microcontroller/pentium/n3710/pin.py
index 0be635a..45ce0e7 100644
--- a/src/adafruit_blinka/microcontroller/pentium/n3710/pin.py
+++ b/src/adafruit_blinka/microcontroller/pentium/n3710/pin.py
@@ -1,4 +1,7 @@
-"""Pentium N3710 (Braswell core SOC) pin names"""
+"""Pentium N3710 (Braswell core SOC) pin names
+   i2c and GPIO can be accessed through Blinka.
+   For i2c use IC20_SCL, IC20-SDA and IC21-SCL, IC21-SDA in the i2c(<sdl, sda>) calls.
+   For UART use pyserial"""
 from adafruit_blinka.microcontroller.generic_linux.libgpiod_pin import Pin
 
 # gpiochip3
@@ -45,7 +48,7 @@ SATA_GP2 = TS_RST = GPIO_492
 
 
 # not general gpio on chip 0
-# uarts
+# use pyserial not blinka.  These are only included for completeness
 
 UART1_RXD = Pin((0, 16))
 UART1_TXD = Pin((0, 20))
@@ -65,12 +68,13 @@ GPIO_434 = UART1_TXD
 GPIO_435 = UART2_TXD
 GPIO_436 = UART2_CTS
 
-# i2c
-I2C0_SDA = Pin((0, 61))
+# i2c use these addresses when accessing i2c from Blinka.  You can also access
+# the i2c useing smbus
+I2C0_SDA = Pin((0, 61)) # IC21 on diagram, port 0 in hardware manual
 I2C0_SCL = Pin((0, 65))
 
-I2C1_SDA = TS_I2C_SDA = Pin((0, 45))  # listed as port 5 on hardware manual
-I2C1_SCL = TS_I2C_SCL = Pin((0, 48))  # i2c2 on diagram
+I2C1_SDA = TS_I2C_SDA = Pin((0, 45))  # I2C2 on diagram, port 5 in hardware manual
+I2C1_SCL = TS_I2C_SCL = Pin((0, 48))
 
 
 GPIO_469 = I2C1_SDA  # I2C2 on diagram
@@ -78,7 +82,6 @@ GPIO_472 = I2C1_SCL
 GPIO_475 = I2C0_SDA  # I2C1 on diagram
 GPIO_479 = I2C0_SCL
 
-i2cPorts = ((0, I2C0_SCL, I2C0_SDA), (1, I2C1_SCL, I2C1_SDA))
-
-# ordered as uartId, txId, rxId
-uartPorts = ((1, UART1_TXD, UART1_RXD), (2, UART2_TXD, UART2_RXD))
+# ordered as i2cId, sclId, sdaId
+i2cPorts = ((0, I2C0_SCL, I2C0_SDA),
+            (1, I2C1_SCL, I2C1_SDA))