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bugfix RH03 sensor

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harald42 2013-11-12 13:27:13 +01:00 committed by harald
parent 310234e0dc
commit 7b46026b52
2 changed files with 12 additions and 16 deletions
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5
examples/osd/climate/er-example-server.c
View file

@ -141,7 +141,7 @@ info_handler(void* request, void* response, uint8_t *buffer, uint16_t preferred_
/* Some data that has the length up to REST_MAX_CHUNK_SIZE. For more, see the chunk resource. */
// jSON Format
index += sprintf(message + index,"{\n \"version\" : \"V0.4\",\n");
index += sprintf(message + index,"{\n \"version\" : \"V0.4.1\",\n");
index += sprintf(message + index," \"name\" : \"6lowpan-climate\"\n");
index += sprintf(message + index,"}\n");
@ -691,7 +691,9 @@ hw_init()
ds1820_temp();
#endif
#if REST_RES_DHT11
//DHT_INIT();
DHT_Read_Data(&dht11_temp, &dht11_hum);
// DHT_Read_Data(&dht11_temp, &dht11_hum);
#endif
}
#define MESURE_INTERVAL (20 * CLOCK_SECOND)
@ -801,6 +803,7 @@ PROCESS_THREAD(rest_server_example, ev, data)
PRINTF("Periodic\n");
etimer_reset(&ds_periodic_timer);
#if REST_RES_DHT11
// DHT_Read_Data(&dht11_temp, &dht11_hum);
DHT_Read_Data(&dht11_temp, &dht11_hum);
#endif
#if REST_RES_DS1820

17
platform/osd-merkur/dev/dht11.c
View file

@ -46,22 +46,15 @@ uint8_t DHT_Read_Data(uint16_t *temperature, uint16_t *humidity){
sreg = SREG; /* Save status register before disabling interrupts. */
cli(); /* Disable interrupts. */
//Prepare the bus
PIN_INIT();
//Set pin Output
//Pin High
DHT_DRIVE();
// mdelay(250); //Wait for 250mS
mdelay(100); //Wait for 100mS
//Send Request Signal
//Pin Low
OUTP_0(); //20ms Low
#if DHT11
mdelay(20);
#else
udelay(500);
#endif
//Pin High
OUTP_1();
udelay(40); //40us High
@ -74,6 +67,9 @@ uint8_t DHT_Read_Data(uint16_t *temperature, uint16_t *humidity){
//Repeat for each Transistions
for (i=0; i<MAXTIMINGS; i++) {
//While state is the same count microseconds
// led1_on();
// led1_off();
while (laststate==DHT_INP()) {
udelay(1);
counter++;
@ -90,17 +86,14 @@ uint8_t DHT_Read_Data(uint16_t *temperature, uint16_t *humidity){
//Shift data[] value 1 position left
//Example. 01010100 if we shift it left one time it will be
//10101000
// led1_on();
data[j/8]<<=1;
if (counter >= 15) { //If it was high for more than 40uS
// led1_off();
// led1_on();
data[j/8]|=1; //it means it is bit '1' so make a logic
// led1_on();
// led1_off();
} //OR with the value (save it)
j++; //making an OR by 1 to this value 10101000
// led1_off();
} //we will have the resault 10101001
//1 in 8-bit binary is 00000001
//j/8 changes table record every 8 bits which means a byte has been saved