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lm4f: Update stellaris example to new LM4F registers

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The LM4F provides new registers for system control. Each peripheral
now has its own clock gating control register. The LM4F still supports
the legacy registers for backwards compatibility.

Use SYSCTL_RCGCGPIO instead of SYSCTL_RCGC to enable the GPIO.

Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This commit is contained in:
Alexandru Gagniuc 2012-11-24 13:58:21 -06:00
parent 1a9d628a02
commit 2477681c7d
1 changed files with 1 additions and 2 deletions
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3
examples/lm4f/stellaris-ek-lm4f120xl/miniblink/miniblink.c
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@ -27,13 +27,12 @@
* Green controlled by PF3 * Green controlled by PF3
* Blue controlled by PF2 * Blue controlled by PF2
*/ */
#include <libopencm3/lm4f/systemcontrol.h> #include <libopencm3/lm4f/systemcontrol.h>
#include <libopencm3/lm4f/gpio.h> #include <libopencm3/lm4f/gpio.h>
void gpio_setup(void) void gpio_setup(void)
{ {
SYSTEMCONTROL_RCGC2 |= 0x20; /* Enable GPIOF in run mode. */ SYSCTL_RCGCGPIO |= 0x20; /* Enable GPIOF in run mode. */
const u32 outpins = ((1<<3) | (1<<2) | (1<<1)); const u32 outpins = ((1<<3) | (1<<2) | (1<<1));
GPIO_DIR(GPIOF) |= outpins; /* Configure outputs. */ GPIO_DIR(GPIOF) |= outpins; /* Configure outputs. */