From efa36a86e9b73956b9dc3847eb58de81f3f55485 Mon Sep 17 00:00:00 2001
From: "Mark A. Yoder" <Mark.A.Yoder@Rose-Hulman.edu>
Date: Wed, 7 Jun 2023 14:36:32 -0400
Subject: [PATCH] Cleaning up formatting. Moving tmp101 from x48 to x49.
---
.../beaglebone-cookbook/02sensors/sensors.rst | 32 +++++++++++--------
1 file changed, 18 insertions(+), 14 deletions(-)
diff --git a/books/beaglebone-cookbook/02sensors/sensors.rst b/books/beaglebone-cookbook/02sensors/sensors.rst
index 0ecc18f8..86f841d5 100644
--- a/books/beaglebone-cookbook/02sensors/sensors.rst
+++ b/books/beaglebone-cookbook/02sensors/sensors.rst
@@ -543,7 +543,7 @@ Try rotating the encoder clockwise and counter-clockwise.
You'll see an output like this:
.. code-block:: bash
-
+
data = 32
data = 40
data = 44
@@ -622,11 +622,11 @@ If you don't need the NMEA formatting, you can skip the *npm* part and remove th
.. note::
If you get an error like this
- TypeError: Cannot call method 'readline' of undefined
+ *TypeError: Cannot call method 'readline' of undefined*
-add this line to the end of file ``/usr/local/lib/node_modules/bonescript/serial.js``:
+ add this line to the end of file ``/usr/local/lib/node_modules/bonescript/serial.js``:
-*exports.serialParsers = m.module.parsers;*
+ *exports.serialParsers = m.module.parsers;*
.. _cape-headers-serial_fig:
@@ -683,15 +683,18 @@ shows that you have wired your device to |I2C| bus *2*.
Table of |I2C| outputs
-Once the |I2C| device is wired up, you can use a couple handy |I2C|
+Once the |I2C| device is wired up, you can use a couple handy |I2C|
tools to test the device. Because these are Linux command-line tools,
you have to use *2* as the bus number. *i2cdetect*, shown in :ref:`js_i2cTools`,
shows which |I2C| devices are on the bus. The *-r* flag indicates which bus to use.
-Our TMP101 is appearing at address *0x498*. You can use the *i2cget* command to read
+Our TMP101 is appearing at address *0x49*. You can use the *i2cget* command to read
the value. It returns the temperature in hexadecimal and degrees C.
In this example, 0x18 = 24{deg}C, which is 75.2{deg}F. (Hmmm, the office is a bit warm today.)
Try warming up the TMP101 with your finger and running *i2cget* again.
+.. todo
+ fix deg
+
.. _js_i2cTools:
|I2C| tools
@@ -743,7 +746,7 @@ Assuming the TMP101 is on bus 2 (the last digit is the bus number)
0 -rw-rw-r-- 1 root gpio 4096 Dec 31 1999 uevent
-Assuming the TMP101 is at address 0x48:
+Assuming the TMP101 is at address 0x49
.. code-block:: bash
@@ -764,18 +767,16 @@ Yes, it's there, now see what happened.
.. code-block:: bash
bone$ ls
- 2-0049 delete_device device i2c-dev name
- new_device of_node power subsystem uevent
+ 2-0049 delete_device device i2c-dev name new_device of_node power subsystem uevent
Notice a new directory has appeared. It's for i2c bus 2, address 0x49. Look into it.
.. code-block:: bash
- bone$ cd 2-0048/hwmon/hwmon0
+ bone$ cd 2-0049/hwmon/hwmon0
bone$ ls -F
- device@ name power/ subsystem@ temp1_input temp1_max
- temp1_max_hyst uevent update_interval
+ device@ name power/ subsystem@ temp1_input temp1_max temp1_max_hyst uevent update_interval
bone$ cat temp1_input
24250
@@ -838,6 +839,7 @@ using the kernel driver. First you need to install the i2c module.
:download:`i2ctmp101.py <../code/02sensors/i2ctmp101.py>`
This gets only 8 bits for the temperature. See the TMP101 datasheet
+(https://www.ti.com/product/TMP101)
for details on how to get up to 12 bits.
Reading Temperature via a Dallas 1-Wire Device
@@ -879,7 +881,9 @@ Wire up as shown in :ref:`sensors_1-wire_fig`.
Wiring a Dallas 1-Wire temperature sensor
-.. note::
+.. hide
+ The bit.ly doesn't work.
+ .. note::
This solution, written by Elias Bakken (@AgentBrum),
originally appeared on`Hipstercircuits <http://bit.ly/1FaRbbK>`_.
@@ -912,7 +916,7 @@ Now run the following command to discover the serial number on your device:
I have two devices wired in parallel on the same P9_12 input.
This shows the serial numbers for all the devices.
-Finally, add the code in :ref:`sensors_onewire__code` in to a
+Finally, add the code in :ref:`py_onewire__code` in to a
file named *w1.py*, edit the path assigned to *w1* so
that the path points to your device, and then run it.
--
GitLab