c6165a3bcf
Now callback functions get the URI of the request, this allows to use a single resource for multiple different URIs. The is_json flag is now gone for the to-string function, instead the macro has an is_str flag. If set this automagically produces quotes around the string for json output. Now from-string functions can return an error-code, 0 for success, -1 for error.
108 lines
1.9 KiB
C
108 lines
1.9 KiB
C
/**
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* \file
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* Resource for Arduino PWM
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* \author
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* Ralf Schlatterbeck <rsc@runtux.com>
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*
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* \brief get/put pwm and period for LED pin
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "contiki.h"
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#include "jsonparse.h"
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#include "er-coap.h"
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#include "generic_resource.h"
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#include "led_pwm.h"
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int pwm_from_string (const char *name, const char *uri, const char *s)
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{
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uint32_t tmp = strtoul (s, NULL, 10);
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if (tmp > 255) {
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tmp = 255;
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}
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pwm = tmp;
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return 0;
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}
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size_t
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pwm_to_string (const char *name, const char *uri, char *buf, size_t bufsize)
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{
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return snprintf (buf, bufsize, "%d", pwm);
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}
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GENERIC_RESOURCE \
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( led_pwm
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, LED PWM
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, duty-cycle
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, 0
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, pwm_from_string
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, pwm_to_string
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);
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int period_from_string (const char *name, const char *uri, const char *s)
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{
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uint32_t tmp = (strtoul (s, NULL, 10) + 50) / 100;
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if (tmp > 10) {
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tmp = 10;
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}
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if (tmp == 0) {
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tmp = 1;
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}
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period_100ms = tmp;
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return 0;
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}
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size_t
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period_to_string (const char *name, const char *uri, char *buf, size_t bufsize)
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{
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return snprintf (buf, bufsize, "%d", period_100ms * 100);
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}
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GENERIC_RESOURCE \
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( led_period
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, LED Period
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, ms
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, 0
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, period_from_string
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, period_to_string
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);
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size_t
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analog2_v (const char *name, const char *uri, char *buf, size_t bufsize)
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{
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return snprintf
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(buf, bufsize, "%d.%03d", analog2_voltage / 1000, analog2_voltage % 1000);
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}
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GENERIC_RESOURCE \
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( analog2_voltage
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, Analog 2 voltage
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, V
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, 0
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, NULL
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, analog2_v
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);
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size_t
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analog5_v (const char *name, const char *uri, char *buf, size_t bufsize)
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{
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return snprintf
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(buf, bufsize, "%d.%03d", analog5_voltage / 1000, analog5_voltage % 1000);
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}
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GENERIC_RESOURCE \
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( analog5_voltage
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, Analog 5 voltage
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, V
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, 0
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, NULL
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, analog5_v
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);
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/*
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* VI settings, see coding style
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* ex:ts=8:et:sw=2
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*/
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