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Fixed the requirement for -lm

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Updated the gpio program to be device tree aware.
This commit is contained in:
Gordon Henderson
2015-09-24 22:35:31 +01:00
parent 170dce5f19
commit f6c40cb2a6
9 changed files with 98 additions and 34 deletions
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20
gpio/gpio.1
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@@ -1,4 +1,4 @@
.TH gpio 1 "January 2015" wiringPi "Command-Line access to Raspberry Pi's GPIO"
.TH GPIO 1 "September 2015" wiringPi "Command-Line access to Raspberry Pi's GPIO"
.SH NAME
gpio \- Command-line access to Raspberry Pi's GPIO
@@ -251,12 +251,9 @@ on the associated /dev/ entries so that the current user has access to
them. Optionally it will set the I2C baudrate to that supplied in Kb/sec
(or as close as the Pi can manage) The default speed is 100Kb/sec.
Note that on a Pi with a recent 3.18 kernel with the device-tree structure
enable, the load may fail until you add:
.I dtparam=i2c=on
into \fB/boot/config.txt\fR to allow user use of the I2C bus.
Note: On recent kernels with the device tree enabled you should use the
raspi-config program to load/unload the I2C device at boot time.
(or disable the device tree to continue to use this method)
.TP
.B load spi
@@ -269,12 +266,9 @@ this has fixed the buffer size. The way to change it now is to edit
the /boot/cmdline.txt file and add on spdev.bufsiz=8192 to set it to
e.g. 8192 bytes then reboot.
Note that on a Pi with a recent 3.18 kernel with the device-tree structure
enable, the load may fail until you add:
.I dtparam=spi=on
into \fB/boot/config.txt\fR to allow user use of the I2C bus.
Note: On recent kernels with the device tree enabled you should use the
raspi-config program to load/unload the SPI device at boot time.
(or disable the device tree to continue to use this method)
.TP
.B gbr