void Str_show()
{
uint8 i,j; //i表示第几个字，j表示横坐标
LCD_TABLE = LCD_TABLE2;
for( i=0,j=0; i<8; i++,j++ )
{
LCD_Str(j*16, 0, i );
}
for( j=0; i<16; i++,j++ )
{
LCD_Str(j*16, 2, i );
}
for( j=0; i<24; i++,j++ )
{
LCD_Str(j*16, 4, i );
}
for( j=0; i<32; i++,j++ )
{
LCD_Str(j*16, 6, i );
}
}
void LCD_Err(unsigned char *str)
{
int i;
char buf0[17];
char buf1[17];
char buf2[17];
memset(buf0, 0x20, 16);
memset(buf1, 0x20, 16);
memset(buf2, 0x20, 16);
buf0[16] = 0;
buf1[16] = 0;
buf2[16] = 0;
int len = strlen(str);
if (len > 16 * 3) len = 16 * 3;
for (i = 0; i < len; ++i) {
if (i < 16) {
buf0[i] = str[i];
}
else if (i < 16 * 2) {
buf1[i - 16] = str[i];
}
else if (i < 16 * 3) {
buf2[i - 16 * 2] = str[i];
}
}
LCD_Str(0,0,"#### ERROR ####");
LCD_Str(0,2,buf0);
LCD_Str(0,4,buf1);
LCD_Str(0,6,buf2);
}
int main(int argc, char *argv[])
{
int i, j, len;
char buf[17];
redisContext *ctx;
redisReply *reply;
wiringPiSetup();
LCD_Init();
// banner
LCD_Str(0,0,"================");
LCD_Str(0,2," Redis->OLED ");
LCD_Str(0,4," Display ");
LCD_Str(0,6,"================");
delay(3000);
// clear
LCD_CLS();
delay(1000);
// connect to redis
ctx = redisConnect("127.0.0.1", 6379);
if (ctx->err) {
LCD_Err("cannot connect to Redis...");
delay(2000);
LCD_Err(ctx->errstr);
return -1;
}
while(1) {
for (i = 0; i < 4; ++i) {
// clear buffer
memset(buf, 0x20, 16);
buf[16] = 0;
// get string from Redis...(oled:0-3)
reply = redisCommand(ctx, "GET oled:%d", i);
if (reply == NULL) {
LCD_Err("redisCommand() failed...");
continue;
}
if (reply->type == REDIS_REPLY_ERROR) {
LCD_Str(0, 2 * i, " ");
freeReplyObject(reply);
continue;
}
printf("oled:%d -> %s\n", i, reply->str);
if (reply->str == NULL) {
LCD_Str(0, 2 * i, " ");
freeReplyObject(reply);
continue;
}
// copy string to buffer
len = strlen(reply->str);
if (len > 16) len = 16;
for (j = 0; j < len; ++j) {
buf[j] = reply->str[j];
}
// set string to OLED
LCD_Str(0, 2 * i, buf);
freeReplyObject(reply);
}
delay(200);
}
return 0;
}
