clockworkpi/WiringPi
1
0
Fork 0
mirror of https://github.com/clockworkpi/WiringPi.git synced 2026-03-23 20:32:54 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Added some tweaks to gpio to set alt modes on pins (sssh!)

Browse Source
This commit is contained in:
Gordon Henderson
2013-08-03 23:53:35 +01:00
parent 43422be6ac
commit f18c8f7204
3 changed files with 56 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
wiringPi/wiringPi.c
View File

@@ -118,7 +118,6 @@ struct wiringPiNodeStruct *wiringPiNodes = NULL ;
#define FSEL_INPT 0b000
#define FSEL_OUTP 0b001
#define FSEL_ALT0 0b100
#define FSEL_ALT0 0b100
#define FSEL_ALT1 0b101
#define FSEL_ALT2 0b110
#define FSEL_ALT3 0b111
@@ -925,6 +924,32 @@ void pinEnableED01Pi (int pin)
*********************************************************************************
*/
/*
* pinModeAlt:
* This is an un-documented special to let you set any pin to any mode
*********************************************************************************
*/
void pinModeAlt (int pin, int mode)
{
int fSel, shift ;
if ((pin & PI_GPIO_MASK) == 0) // On-board pin
{
/**/ if (wiringPiMode == WPI_MODE_PINS)
pin = pinToGpio [pin] ;
else if (wiringPiMode == WPI_MODE_PHYS)
pin = physToGpio [pin] ;
else if (wiringPiMode != WPI_MODE_GPIO)
return ;
fSel = gpioToGPFSEL [pin] ;
shift = gpioToShift [pin] ;
*(gpio + fSel) = (*(gpio + fSel) & ~(7 << shift)) | ((mode & 0x7) << shift) ;
}
}
/*
* pinMode:

1
wiringPi/wiringPi.h
View File

@@ -129,6 +129,7 @@ extern int wiringPiSetupSys (void) ;
extern int wiringPiSetupGpio (void) ;
extern int wiringPiSetupPhys (void) ;
extern void pinModeAlt (int pin, int mode) ;
extern void pinMode (int pin, int mode) ;
extern void pullUpDnControl (int pin, int pud) ;
extern int digitalRead (int pin) ;