shithub: m8c

ref: 7c42304de5ba50eece618def9fb5e792f892e80b
dir: /write.c/

#include <libserialport.h>
#include <stdint.h>
#include <stdio.h>
#include <unistd.h>

int enable_and_reset_display(struct sp_port *port) {
  uint8_t buf[2];
  int result;

  fprintf(stderr, "Enabling and resetting M8 display\n");

  buf[0] = 0x44;
  result = sp_blocking_write(port, buf, 1, 5);
  if (result != 1) {
    fprintf(stderr, "Error enabling M8 display, code %d", result);
  }

  usleep(500);
  buf[0] = 0x45;
  buf[1] = 0x52;
  result = sp_blocking_write(port, buf, 2, 5);
  if (result != 2) {
    fprintf(stderr, "Error resetting M8 display, code %d", result);
  }
  sleep(1);

  return 1;
}

int disconnect(struct sp_port *port) {
  char buf[1] = {'D'};
  int result;

  fprintf(stderr, "Disconnecting M8\n");

  result = sp_blocking_write(port, buf, 1, 5);
  if (result != 1) {
    fprintf(stderr, "Error sending disconnect, code %d", result);
    return -1;
  }
  return 1;
}

int send_msg_controller(struct sp_port *port, uint8_t input) {
  char buf[2] = {'C',input};
  size_t nbytes = 2;
  int result;
  result = sp_blocking_write(port, buf, nbytes, 5);
  if (result != nbytes) {
    fprintf(stderr, "Error sending input, code %d", result);
    return -1;
  }
  return 1;

}

int send_msg_keyjazz(struct sp_port *port, uint8_t note, uint8_t velocity) {
  if (velocity > 64)
    velocity = 64;
  char buf[3] = {'K',note,velocity};
  size_t nbytes = 3;
  int result;
  result = sp_blocking_write(port, buf, nbytes,5);
  if (result != nbytes) {
    fprintf(stderr, "Error sending keyjazz, code %d", result);
    return -1;
  }

  return 1;
}