mirror of
https://github.com/libretro/RetroArch.git
synced 2024-06-02 19:57:24 -04:00
74c8506391
Also fix white spaces in led drivers, make led drivers use standard driver format. Begin work on translation driver. Add salamander files to gitignore.
146 lines
3.1 KiB
C
146 lines
3.1 KiB
C
/* RetroArch - A frontend for libretro.
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include "../led_driver.h"
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#include "../led_defines.h"
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#include "../../configuration.h"
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#include "../../verbosity.h"
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typedef struct
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{
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int setup[MAX_LEDS];
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int map[MAX_LEDS];
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} rpiled_t;
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static rpiled_t curins;
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static rpiled_t *cur = &curins;
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static void rpi_init(void)
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{
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int i;
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settings_t *settings = config_get_ptr();
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if (!settings)
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return;
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for(i = 0; i < MAX_LEDS; i++)
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{
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cur->setup[i] = 0;
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cur->map[i] = settings->uints.led_map[i];
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RARCH_LOG("[LED]: rpi map[%d]=%d\n", i, cur->map[i]);
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}
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}
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static void rpi_free(void)
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{
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}
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static int set_gpio(int gpio, int value)
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{
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FILE *fp;
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char buf[256];
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snprintf(buf, sizeof(buf), "/sys/class/gpio/gpio%d/value", gpio);
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fp = fopen(buf, "w");
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if(!fp)
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{
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RARCH_WARN("[LED]: failed to set GPIO %d\n", gpio);
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return -1;
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}
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fprintf(fp, "%d\n", value ? 1 : 0);
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fclose(fp);
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return 1;
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}
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static int setup_gpio(int gpio)
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{
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FILE *fp;
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char buf[256];
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snprintf(buf, sizeof(buf), "/sys/class/gpio/gpio%d/direction", gpio);
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fp = fopen(buf, "w");
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if(!fp)
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{
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snprintf(buf, sizeof(buf), "/sys/class/gpio/export");
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fp = fopen(buf, "w");
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if(!fp)
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{
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RARCH_WARN("[LED]: failed to export GPIO %d\n", gpio);
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return -1;
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}
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fprintf(fp,"%d\n", gpio);
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fclose(fp);
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snprintf(buf, sizeof(buf), "/sys/class/gpio/gpio%d/direction", gpio);
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fp = fopen(buf, "w");
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}
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if(!fp)
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{
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RARCH_WARN("[LED]: failed to set direction GPIO %d\n",
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gpio);
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return -1;
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}
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fprintf(fp, "out\n");
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fclose(fp);
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return 1;
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}
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static void rpi_set(int led, int state)
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{
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int gpio = 0;
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if((led < 0) || (led >= MAX_LEDS))
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{
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RARCH_WARN("[LED]: invalid led %d\n", led);
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return;
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}
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gpio = cur->map[led];
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if(gpio <= 0)
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return;
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if(cur->setup[led] == 0)
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{
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RARCH_LOG("[LED]: rpi setup led %d gpio %d\n",
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led, gpio, state);
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cur->setup[led] = setup_gpio(gpio);
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if(cur->setup[led] <= 0)
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{
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RARCH_WARN("[LED]: failed to setup led %d gpio %d\n",
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led, gpio);
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}
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}
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if(cur->setup[led] > 0)
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{
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RARCH_LOG("[LED]: rpi LED driver set led %d gpio %d = %d\n",
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led, gpio, state);
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set_gpio(gpio, state);
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}
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}
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const led_driver_t rpi_led_driver = {
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rpi_init,
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rpi_free,
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rpi_set,
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"rpi"
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};
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