diff options
| author | Ed Sutter <edsutterjr@gmail.com> | 2015-07-13 22:11:27 -0400 |
|---|---|---|
| committer | Ed Sutter <edsutterjr@gmail.com> | 2015-07-13 22:11:27 -0400 |
| commit | b8ffb40eaadaf34b218578b818ece0323430c756 (patch) | |
| tree | 2075de1194f0a19d08974d6ee1f41592336f245c /ports/beagleboneblack/cpuio.h | |
| parent | replace bashrc with envsetup to eliminate implication that it is bash specific (diff) | |
| download | umon-b8ffb40eaadaf34b218578b818ece0323430c756.tar.bz2 | |
BBB: Changes to support runtime blinking LED.
Diffstat (limited to 'ports/beagleboneblack/cpuio.h')
| -rw-r--r-- | ports/beagleboneblack/cpuio.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/ports/beagleboneblack/cpuio.h b/ports/beagleboneblack/cpuio.h index 2ae9891..d1c4fd7 100644 --- a/ports/beagleboneblack/cpuio.h +++ b/ports/beagleboneblack/cpuio.h @@ -1 +1,22 @@ #define DEFAULT_BAUD_RATE 115200 + +#define HWREAD32(a) *(volatile unsigned long *)(a) +#define HWREAD16(a) *(volatile unsigned short *)(a) +#define HWREAD8(a) *(volatile unsigned char *)(a) + +#define HWWRITE32(a,b) *(volatile unsigned long *)(a) = (b) +#define HWWRITE16(a,b) *(volatile unsigned short *)(a) = (b) +#define HWWRITE8(a,b) *(volatile unsigned char *)(a) = (b) + +#define GPIO1_21 (1<<21) +#define GPIO1_22 (1<<22) +#define GPIO1_23 (1<<23) +#define GPIO1_24 (1<<24) + +// Referring to BBB schematic... +// Pg6 shows the 4 user leds, pg3 shows the pins on the Sitara +// The four user leds are on GPIO1, pins 21-24 +#define USR0_LED GPIO1_21 // Ball V15: GPMC_A5 mode7 (D2) +#define USR1_LED GPIO1_22 // Ball U15: GPMC_A6 mode7 (D3) +#define USR2_LED GPIO1_23 // Ball T15: GPMC_A7 mode7 (D4) +#define USR3_LED GPIO1_24 // Ball V16: GPMC_A8 mode7 (D5) |