diff options
author | Vikas Manocha <vikas.manocha@st.com> | 2017-04-10 15:03:00 -0700 |
---|---|---|
committer | Tom Rini <trini@konsulko.com> | 2017-05-08 11:57:21 -0400 |
commit | 2f80a9f72ecf4cfee68279a45e3c155f6516faa1 (patch) | |
tree | 20decea52c6dcf8052e6eb8a48cb1596d93f4615 /board | |
parent | 280057bd7dd623420b2d8b383fe5bbe26820bc93 (diff) |
stm32f746: to switch on user LED1 & read user button
All discovery boards have one user button & one user LED. Here we are
just reading the button status & switching ON the user LED.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
cc: Christophe KERELLO <christophe.kerello@st.com>
Diffstat (limited to 'board')
-rw-r--r-- | board/st/stm32f746-disco/stm32f746-disco.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/board/st/stm32f746-disco/stm32f746-disco.c b/board/st/stm32f746-disco/stm32f746-disco.c index 45a2c47aa2..52c1900ee3 100644 --- a/board/st/stm32f746-disco/stm32f746-disco.c +++ b/board/st/stm32f746-disco/stm32f746-disco.c @@ -17,6 +17,7 @@ #include <asm/arch/stm32_periph.h> #include <asm/arch/stm32_defs.h> #include <asm/arch/syscfg.h> +#include <asm/gpio.h> DECLARE_GLOBAL_DATA_PTR; @@ -72,6 +73,42 @@ u32 get_board_rev(void) return 0; } +int board_late_init(void) +{ + struct gpio_desc gpio = {}; + int node; + + node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "st,led1"); + if (node < 0) + return -1; + + gpio_request_by_name_nodev(gd->fdt_blob, node, "led-gpio", 0, &gpio, + GPIOD_IS_OUT); + + if (dm_gpio_is_valid(&gpio)) { + dm_gpio_set_value(&gpio, 0); + mdelay(10); + dm_gpio_set_value(&gpio, 1); + } + + /* read button 1*/ + node = fdt_node_offset_by_compatible(gd->fdt_blob, 0, "st,button1"); + if (node < 0) + return -1; + + gpio_request_by_name_nodev(gd->fdt_blob, node, "button-gpio", 0, &gpio, + GPIOD_IS_IN); + + if (dm_gpio_is_valid(&gpio)) { + if (dm_gpio_get_value(&gpio)) + puts("usr button is at HIGH LEVEL\n"); + else + puts("usr button is at LOW LEVEL\n"); + } + + return 0; +} + int board_init(void) { gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100; |