[riot-users] How to use SAUL?

Philipp Blum philipp-blum at jakiku.de
Thu Mar 21 06:24:31 CET 2019


 

Thanks, works fine. I changed the PIN config in the driver. I am not
really happy with it. So, where to place the pin config instead? Should
I place it in my boards configuration? 

Am 2019-03-20 15:23, schrieb Ken Bannister: 

> Hi Philipp, 
> 
> I created a similar simple data collection app [1]. It uses SAUL with an MCP9808 temp sensor (JC 42.4 compliant), and of course CoAP. ;-) Start with the README. Then look for 'saul' in Makefile and in main.c main() and _run_sensor_loop(). 
> 
> Ken 
> 
> [1] https://github.com/kb2ma/riot-data-collector 
> 
> On 3/20/19 1:04 PM, Philipp Blum wrote: 
> 
>> Hi, 
>> 
>> I just want to use the DHT11 sensor. I know that RIOT has an abstraction layer for sensors, which is really nice. My problem is just: How to use it? I have a server on my device which accepts UDP packets. The server should read the sensor data on a regular base, caches them and sends them back when asked. So, simple as that. Probably I have add the modules for my driver and saul, right? So my Makefile should look like this 
>> 
>> USEMDOULE += saul 
>> 
>> USEMODULE += dht 
>> 
>> The dht driver already has confgurations, which I need to override, since the pins are not correct. Should I just do the following in my application? 
>> 
>> #undef DHT_PARAM_PIN 
>> 
>> #define DHT_PARAM_PIN (GPIO_PIN(0, 12)) 
>> 
>> or should I define the DHT_PARAMS? When the setup is done, I probably just need to use saul itself with: 
>> 
>> const char temp_sensor_name[] = "dht"; phydat_t temp_data; saul_reg_t * temp_sensor_reg = saul_reg_find_name(temp_sensor_name); saul_reg_read(temp_sensor_reg, &temp_data); 
>> 
>> right? thanks for the help :) 
>> 
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> 
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