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Not all pins default to GPIO. Setting func_sel to 3 enables GPIO for

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each pin. Do this.
This commit is contained in:
Mariano Alvira 2009-09-17 16:11:19 -04:00
parent 16f680544c
commit d247a613b7
1 changed files with 9 additions and 0 deletions
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9
tests/blink-allio.c
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@ -1,4 +1,8 @@
#define MBAR_GPIO 0x80000000 #define MBAR_GPIO 0x80000000
#define GPIO_FUNC_SEL0 0x80000018 /* GPIO 15 - 0; 2 bit blocks */
#define GPIO_FUNC_SEL1 0x8000001c
#define GPIO_FUNC_SEL2 0x80000020
#define GPIO_FUNC_SEL3 0x80000024
#define GPIO_PAD_DIR0 0x80000000 #define GPIO_PAD_DIR0 0x80000000
#define GPIO_DATA0 0x80000008 #define GPIO_DATA0 0x80000008
#define GPIO_PAD_DIR1 0x80000004 #define GPIO_PAD_DIR1 0x80000004
@ -15,6 +19,11 @@
__attribute__ ((section ("startup"))) __attribute__ ((section ("startup")))
void main(void) { void main(void) {
*(volatile uint32_t *)GPIO_FUNC_SEL0 = 0xffffffff;
*(volatile uint32_t *)GPIO_FUNC_SEL1 = 0xffffffff;
*(volatile uint32_t *)GPIO_FUNC_SEL2 = 0xffffffff;
*(volatile uint32_t *)GPIO_FUNC_SEL3 = 0xffffffff;
*(volatile uint32_t *)GPIO_PAD_DIR0 = 0xffffffff; *(volatile uint32_t *)GPIO_PAD_DIR0 = 0xffffffff;
*(volatile uint32_t *)GPIO_PAD_DIR1 = 0xffffffff; *(volatile uint32_t *)GPIO_PAD_DIR1 = 0xffffffff;