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| author | Erich Eckner <git@eckner.net> | 2018-11-01 11:20:07 +0100 |
|---|---|---|
| committer | Erich Eckner <git@eckner.net> | 2018-11-01 11:20:07 +0100 |
| commit | d9b831fcc29585eab34c58c5a67c060d886bc8a6 (patch) | |
| tree | 6694c246dd55b33d73aaa01464bc73982b237953 /multiplexer.h | |
| parent | 1da3a7ecddeff8c8ecbcc496f156651099dcf00d (diff) | |
| download | anzeige-d9b831fcc29585eab34c58c5a67c060d886bc8a6.tar.xz | |
multiplexer: set up pull-up resistor on SENSE_PIN
Diffstat (limited to 'multiplexer.h')
| -rw-r--r-- | multiplexer.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/multiplexer.h b/multiplexer.h index ed38ecd..86e99ee 100644 --- a/multiplexer.h +++ b/multiplexer.h @@ -5,6 +5,8 @@ // Dom and Gert // Revised: 15-Feb-2013 +# include <stdint.h> + #ifndef __arm__ #define SKIP_GPIO #endif @@ -14,6 +16,23 @@ #define BCM2708_PERI_BASE 0x20000000 #define GPIO_BASE (BCM2708_PERI_BASE + 0x200000) /* GPIO controller */ +/** stolen/cited from wiringPi's wiringPi/wiringPi.c lines 536-548 **/ + +// GPPUD: +// GPIO Pin pull up/down register + +#define GPPUD 37 +// gpioToPUDCLK +// (Word) offset to the Pull Up Down Clock regsiter + +static uint8_t gpioToPUDCLK [] = +{ + 38,38,38,38,38,38,38,38,38,38,38,38,38,38,38,38,38,38,38,38,38,38,38,38,38,38,38,38,38,38,38,38, + 39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39,39, +}; + +/** cite end **/ + #define PAGE_SIZE (4*1024) #define BLOCK_SIZE (4*1024) |