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Merge branch 'master' of git.drogon.net:projects/wiringPi

Conflicts:
	gpio/gpio.c
pull/22/head
Gordon Henderson 12 years ago
parent
commit
1bb4989e11
5 changed files with 161 additions and 25 deletions
  1. +1
    -1
      gpio/Makefile
  2. +55
    -15
      gpio/gpio.1
  3. +46
    -2
      gpio/gpio.c
  4. +51
    -7
      wiringPi/wiringPi.c
  5. +8
    -0
      wiringPi/wiringPi.h

+ 1
- 1
gpio/Makefile View File

@@ -41,7 +41,7 @@ OBJ = gpio.o

all: gpio

gpio: gpio.o
gpio: gpio.o /usr/local/lib/libwiringPi.a
@echo [LD]
@$(CC) -o $@ gpio.o $(LDFLAGS) $(LIBS)


+ 55
- 15
gpio/gpio.1 View File

@@ -4,20 +4,38 @@
gpio \- Command-line access to Raspberry Pi and PiFace GPIO

.SH SYNOPSIS
.TP
.B gpio
.RB [ \-v ]
.TP
.B \-v
.PP
.B gpio
.RB [ \-g ]
.RB < read/write/pwm/mode ...>
.TP
.B [ \-g ]
.B read/write/pwm/mode ...
.PP
.B gpio
.RB [ \-p ]
.RB < read/write/mode ...>
.TP
.B [ \-p ]
.B read/write/mode
.B ...
.PP
.B gpio
.B unexportall/exports
.PP
.B gpio
.B export/edge/unexport
.B ...
.PP
.B gpio
.B drive
group value
.PP
.B gpio
.B pwm-bal/pwm-ms
.PP
.B gpio
.B pwmr
range
.PP
.B gpio
.RB < export/edge/unexport/unexportall/exports ...>
.B load \ i2c/spi

.SH DESCRIPTION

@@ -65,6 +83,14 @@ use the literals \fIup\fR, \fIdown\fR or \fItri\fR to set the internal
pull-up, pull-down or tristate (off) controls.

.TP
.B unexportall
Un-Export all the GPIO pins in the /sys/class/gpio directory.

.TP
.B exports
Print a list (if any) of all the exported GPIO pins and their current values.

.TP
.B export
Export a GPIO pin in the \fI/sys/class/gpio\fR directory. Use like the
mode command above however only \fIin\fR and \fIout\fR are supported at
@@ -96,12 +122,26 @@ requiring root/sudo.
Un-Export a GPIO pin in the /sys/class/gpio directory.

.TP
.B unexportall
Un-Export all the GPIO pins in the /sys/class/gpio directory.
.B drive
group value

Change the pad driver value for the given pad group to the supplied drive
value. Group is 0, 1 or 2 and value is 0-7. Do not use unless you are
absolutely sure you know what you're doing.

.TP
.B exports
Print a list (if any) of all the exported GPIO pins and their current values.
.B pwm-bal/pwm-ms
Change the PWM mode to balanced (the default) or mark:space ratio (traditional)

.TP
.B pwmr
Change the PWM range register. The default is 1024.

.TP
.B load i2c/spi
This loads the i2c or the spi drivers into the system and changes the permissions on
the associated /dev/ entries so that the current user has access to them.


.SH "WiringPi vs. GPIO Pin numbering"

@@ -170,7 +210,7 @@ Gordon Henderson

.SH "REPORTING BUGS"

Report bugs to <gordon@drogon.net>
Report bugs to <projects@drogon.net>

.SH COPYRIGHT



+ 46
- 2
gpio/gpio.c View File

@@ -47,6 +47,8 @@ char *usage = "Usage: gpio -v\n"
" gpio [-p] <read/write/mode> ...\n"
" gpio export/edge/unexport/unexportall/exports ...\n"
" gpio drive <group> <value>\n"
" gpio pwm-bal/pwm-ms \n"
" gpio pwmr <range> \n"
" gpio load spi/i2c" ;


@@ -487,7 +489,7 @@ void doMode (int argc, char *argv [])
*********************************************************************************
*/

void doPadDrive (int argc, char *argv [])
static void doPadDrive (int argc, char *argv [])
{
int group, val ;

@@ -522,7 +524,7 @@ void doPadDrive (int argc, char *argv [])
*********************************************************************************
*/

void doWrite (int argc, char *argv [])
static void doWrite (int argc, char *argv [])
{
int pin, val ;

@@ -604,6 +606,39 @@ void doPwm (int argc, char *argv [])


/*
* doPwmMode: doPwmRange:
* Change the PWM mode and Range values
*********************************************************************************
*/

static void doPwmMode (int mode)
{
pwmSetMode (mode) ;
}

static void doPwmRange (int argc, char *argv [])
{
unsigned int range ;

if (argc != 3)
{
fprintf (stderr, "Usage: %s pwmr <range>\n", argv [0]) ;
exit (1) ;
}

range = (unsigned int)strtoul (argv [2], NULL, 10) ;

if (range == 0)
{
fprintf (stderr, "%s: range must be > 0\n", argv [0]) ;
exit (1) ;
}

pwmSetRange (range) ;
}


/*
* main:
* Start here
*********************************************************************************
@@ -718,6 +753,15 @@ int main (int argc, char *argv [])
wpMode = WPI_MODE_PINS ;
}

// Check for PWM operations

if (wpMode != WPI_MODE_PIFACE)
{
if (strcasecmp (argv [1], "pwm-bal") == 0) { doPwmMode (PWM_MODE_BAL) ; return 0 ; }
if (strcasecmp (argv [1], "pwm-ms") == 0) { doPwmMode (PWM_MODE_MS) ; return 0 ; }
if (strcasecmp (argv [1], "pwmr") == 0) { doPwmRange (argc, argv) ; return 0 ; }
}

// Check for wiring commands

/**/ if (strcasecmp (argv [1], "read" ) == 0) doRead (argc, argv) ;


+ 51
- 7
wiringPi/wiringPi.c View File

@@ -79,6 +79,8 @@ void (*setPadDrive) (int group, int value) ;
int (*digitalRead) (int pin) ;
int (*waitForInterrupt) (int pin, int mS) ;
void (*delayMicroseconds) (unsigned int howLong) ;
void (*pwmSetMode) (int mode) ;
void (*pwmSetRange) (unsigned int range) ;


#ifndef TRUE
@@ -377,22 +379,25 @@ void pinModeGpio (int pin, int mode)
if (!pwmRunning)
{

*(pwm + PWM_CONTROL) = 0 ; // Stop PWM
delayMicroseconds (10) ;
// Gert/Doms Values
*(clk + PWMCLK_DIV) = BCM_PASSWORD | (32<<12) ; // set pwm div to 32 (19.2/3 = 600KHz)
*(clk + PWMCLK_DIV) = BCM_PASSWORD | (32<<12) ; // set pwm div to 32 (19.2/32 = 600KHz)
*(clk + PWMCLK_CNTL) = BCM_PASSWORD | 0x11 ; // Source=osc and enable
digitalWrite (pin, LOW) ;
*(pwm + PWM_CONTROL) = 0 ; // Disable PWM
delayMicroseconds (10) ;
*(pwm + PWM0_RANGE) = 0x400 ;
delayMicroseconds (10) ;
*(pwm + PWM1_RANGE) = 0x400 ;

delayMicroseconds (10) ;

*(pwm + PWM0_RANGE) = 0x400 ; delayMicroseconds (10) ;
*(pwm + PWM1_RANGE) = 0x400 ; delayMicroseconds (10) ;

// Enable PWMs

*(pwm + PWM0_DATA) = 512 ;
*(pwm + PWM1_DATA) = 512 ;

// Balanced mode (default)

*(pwm + PWM_CONTROL) = PWM0_ENABLE | PWM1_ENABLE ;

pwmRunning = TRUE ;
@@ -423,6 +428,38 @@ void pinModeSys (int pin, int mode)
}


/*
* pwmControl:
* Allow the user to control some of the PWM functions
*********************************************************************************
*/

void pwmSetModeWPi (int mode)
{
if (mode == PWM_MODE_MS)
*(pwm + PWM_CONTROL) = PWM0_ENABLE | PWM1_ENABLE | PWM0_MS_MODE | PWM1_MS_MODE ;
else
*(pwm + PWM_CONTROL) = PWM0_ENABLE | PWM1_ENABLE ;
}

void pwmSetModeSys (int mode)
{
return ;
}


void pwmSetRangeWPi (unsigned int range)
{
*(pwm + PWM0_RANGE) = range ; delayMicroseconds (10) ;
*(pwm + PWM1_RANGE) = range ; delayMicroseconds (10) ;
}

void pwmSetRangeSys (unsigned int range)
{
return ;
}


#ifdef notYetReady
/*
* pinED01:
@@ -774,6 +811,8 @@ int wiringPiSetup (void)
digitalRead = digitalReadWPi ;
waitForInterrupt = waitForInterruptWPi ;
delayMicroseconds = delayMicrosecondsWPi ;
pwmSetMode = pwmSetModeWPi ;
pwmSetRange = pwmSetRangeWPi ;
// Open the master /dev/memory device

@@ -928,6 +967,8 @@ int wiringPiSetupGpio (void)
digitalRead = digitalReadGpio ;
waitForInterrupt = waitForInterruptGpio ;
delayMicroseconds = delayMicrosecondsWPi ; // Same
pwmSetMode = pwmSetModeWPi ;
pwmSetRange = pwmSetRangeWPi ;

return 0 ;
}
@@ -956,6 +997,9 @@ int wiringPiSetupSys (void)
digitalRead = digitalReadSys ;
waitForInterrupt = waitForInterruptSys ;
delayMicroseconds = delayMicrosecondsSys ;
pwmSetMode = pwmSetModeSys ;
pwmSetRange = pwmSetRangeSys ;


// Open and scan the directory, looking for exported GPIOs, and pre-open
// the 'value' interface to speed things up for later


+ 8
- 0
wiringPi/wiringPi.h View File

@@ -41,6 +41,12 @@
#define PUD_DOWN 1
#define PUD_UP 2

// PWM

#define PWM_MODE_MS 0
#define PWM_MODE_BAL 1


// Function prototypes
// c++ wrappers thanks to a commend by Nick Lott
// (and others on the Raspberry Pi forums)
@@ -65,6 +71,8 @@ extern void (*pwmWrite) (int pin, int value) ;
extern void (*setPadDrive) (int group, int value) ;
extern int (*digitalRead) (int pin) ;
extern void (*delayMicroseconds) (unsigned int howLong) ;
extern void (*pwmSetMode) (int mode) ;
extern void (*pwmSetRange) (unsigned int range) ;

// Interrupts



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