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https://github.com/dragonpilot/dragonpilot.git
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7222d0f20d
* cleanup include path * continue * format includes * fix testraw.cc * remove include path from SConstruct * regroup * rebase master * almost done * apply review * rename FileReader.xx to filereader.xx * rename Unlogger.x->unlogger.x * rename FrameReader.xx -> framereader.xx * apply reviews * ui.h * continue * fix framebuffer.cc build error:mv util.h up * full path to msm_media_info * fix qcom2 camerad Co-authored-by: Comma Device <device@comma.ai>
32 lines
939 B
C++
32 lines
939 B
C++
#include "selfdrive/common/gpio.h"
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#include <fcntl.h>
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#include <string.h>
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#include <unistd.h>
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#include "selfdrive/common/util.h"
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// We assume that all pins have already been exported on boot,
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// and that we have permission to write to them.
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int gpio_init(int pin_nr, bool output){
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char pin_dir_path[50];
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int pin_dir_path_len = snprintf(pin_dir_path, sizeof(pin_dir_path),
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"/sys/class/gpio/gpio%d/direction", pin_nr);
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if(pin_dir_path_len <= 0){
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return -1;
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}
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const char *value = output ? "out" : "in";
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return util::write_file(pin_dir_path, (void*)value, strlen(value));
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}
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int gpio_set(int pin_nr, bool high){
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char pin_val_path[50];
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int pin_val_path_len = snprintf(pin_val_path, sizeof(pin_val_path),
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"/sys/class/gpio/gpio%d/value", pin_nr);
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if(pin_val_path_len <= 0){
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return -1;
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}
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return util::write_file(pin_val_path, (void*)(high ? "1" : "0"), 1);
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}
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