/*
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* Copyright 2009-2011 Cedric Priscal
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <jni.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <unistd.h>
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#include <err.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/mman.h>
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#include <linux/input.h>
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#include "sun8iw6p_display.h"
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#include <errno.h>
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#include <termios.h>
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#include <string.h>
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#include "android/log.h"
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#define POWER_KEY_PATH "/dev/input/event2"
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#define DEVICE_DISP_PATH "/dev/disp"
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static const char *TAG = "serial_port";
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unsigned long args[3];
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#define LOGI(fmt, args...) __android_log_print(ANDROID_LOG_INFO, TAG, fmt, ##args)
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#define LOGD(fmt, args...) __android_log_print(ANDROID_LOG_DEBUG, TAG, fmt, ##args)
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#define LOGE(fmt, args...) __android_log_print(ANDROID_LOG_ERROR, TAG, fmt, ##args)
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static speed_t getBaudrate(jint baudrate) {
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switch (baudrate) {
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case 0:
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return B0;
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case 50:
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return B50;
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case 75:
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return B75;
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case 110:
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return B110;
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case 134:
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return B134;
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case 150:
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return B150;
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case 200:
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return B200;
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case 300:
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return B300;
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case 600:
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return B600;
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case 1200:
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return B1200;
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case 1800:
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return B1800;
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case 2400:
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return B2400;
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case 4800:
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return B4800;
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case 9600:
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return B9600;
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case 19200:
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return B19200;
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case 38400:
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return B38400;
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case 57600:
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return B57600;
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case 115200:
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return B115200;
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case 230400:
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return B230400;
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case 460800:
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return B460800;
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case 500000:
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return B500000;
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case 576000:
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return B576000;
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case 921600:
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return B921600;
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case 1000000:
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return B1000000;
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case 1152000:
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return B1152000;
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case 1500000:
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return B1500000;
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case 2000000:
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return B2000000;
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case 2500000:
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return B2500000;
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case 3000000:
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return B3000000;
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case 3500000:
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return B3500000;
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case 4000000:
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return B4000000;
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default:
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return -1;
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}
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}
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/*
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* Class: android_serialport_api_SerialPort
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* Method: BackLight_ON
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* Signature: ()V
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*/JNIEXPORT jint JNICALL Java_android_serialport_api_SerialPort_BackLight_1ON(
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JNIEnv *evn, jobject obj) {
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int blanklight_id = open(DEVICE_DISP_PATH, O_RDWR);
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if (blanklight_id < 0) {
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return -1;
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}
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args[0] = 0;
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args[1] = 0;
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LOGI("Open");
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return (jint) ioctl(blanklight_id, DISP_BLANK, args);
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}
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/*
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* Class: android_serialport_api_SerialPort
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* Method: BackLight_OFF
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* Signature: ()V
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*/JNIEXPORT jint JNICALL Java_android_serialport_api_SerialPort_BackLight_1OFF(
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JNIEnv *evn, jobject obj) {
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int blanklight_id = open(DEVICE_DISP_PATH, O_RDWR);
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if (blanklight_id < 0) {
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return -1;
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}
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args[0] = 0;
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args[1] = 1;
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LOGI("Close");
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return (jint) ioctl(blanklight_id, DISP_BLANK, args);
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}
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/*
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* Class: android_serialport_SerialPort
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* Method: open
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* Signature: (Ljava/lang/String;II)Ljava/io/FileDescriptor;
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*/JNIEXPORT jobject JNICALL Java_android_serialport_api_SerialPort_open(
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JNIEnv *env, jclass thiz, jstring path, jint baudrate, jint flags) {
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int fd;
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speed_t speed;
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jobject mFileDescriptor;
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/* Check arguments */
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{
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speed = getBaudrate(baudrate);
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if (speed == -1) {
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/* TODO: throw an exception */
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LOGE("Invalid baudrate");
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return NULL;
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}
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}
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/* Opening device */
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{
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jboolean iscopy;
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const char *path_utf = (*env)->GetStringUTFChars(env, path, &iscopy);
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LOGD("Opening serial port %s with flags 0x%x",
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path_utf, O_RDWR | flags);
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fd = open(path_utf, O_RDWR | flags);
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LOGD("open() fd = %d", fd);
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(*env)->ReleaseStringUTFChars(env, path, path_utf);
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if (fd == -1) {
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/* Throw an exception */
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LOGE("Cannot open port");
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return NULL;
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}
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}
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/* Configure device */
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{
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struct termios cfg;
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LOGD("Configuring serial port");
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if (tcgetattr(fd, &cfg)) {
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LOGE("tcgetattr() failed");
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close(fd);
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return NULL;
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}
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cfmakeraw(&cfg);
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cfsetispeed(&cfg, speed);
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cfsetospeed(&cfg, speed);
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if (tcsetattr(fd, TCSANOW, &cfg)) {
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LOGE("tcsetattr() failed");
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close(fd);
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return NULL;
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}
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}
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/* Create a corresponding file descriptor */
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{
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jclass cFileDescriptor = (*env)->FindClass(env, "java/io/FileDescriptor");
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jmethodID iFileDescriptor = (*env)->GetMethodID(env, cFileDescriptor, "<init>", "()V");
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jfieldID descriptorID = (*env)->GetFieldID(env, cFileDescriptor, "descriptor", "I");
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mFileDescriptor = (*env)->NewObject(env, cFileDescriptor, iFileDescriptor);
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(*env)->SetIntField(env, mFileDescriptor, descriptorID, (jint) fd);
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}
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return mFileDescriptor;
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}
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/*
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* Class: cedric_serial_SerialPort
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* Method: close
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* Signature: ()V
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*/JNIEXPORT void JNICALL Java_android_serialport_api_SerialPort_close(
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JNIEnv *env, jobject thiz) {
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jclass SerialPortClass = (*env)->GetObjectClass(env, thiz);
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jclass FileDescriptorClass = (*env)->FindClass(env,
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"java/io/FileDescriptor");
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jfieldID mFdID = (*env)->GetFieldID(env, SerialPortClass, "mFd",
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"Ljava/io/FileDescriptor;");
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jfieldID descriptorID = (*env)->GetFieldID(env, FileDescriptorClass,
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"descriptor", "I");
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jobject mFd = (*env)->GetObjectField(env, thiz, mFdID);
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jint descriptor = (*env)->GetIntField(env, mFd, descriptorID);
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LOGD("close(fd = %d)", descriptor);
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close(descriptor);
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}
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