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Add ADC example to cc26xx-web-demo

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chenek 2017-02-13 09:37:34 +01:00 • committed by George Oikonomou
parent 55f3a92211
commit 22b262ce73
5 changed files with 101 additions and 1 deletions
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73
examples/cc26xx/cc26xx-web-demo/cc26xx-web-demo.c
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@ -55,9 +55,13 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ti-lib.h"
/*---------------------------------------------------------------------------*/
PROCESS_NAME(cetic_6lbr_client_process);
PROCESS(cc26xx_web_demo_process, "CC26XX Web Demo");
PROCESS(adc_process, "ADC process");
/*---------------------------------------------------------------------------*/
/*
* Update sensor readings in a staggered fashion every SENSOR_READING_PERIOD
@ -84,6 +88,9 @@ static struct uip_icmp6_echo_reply_notification echo_reply_notification;
static struct etimer echo_request_timer;
int def_rt_rssi = 0;
#endif
static uint16_t single_adc_sample;
/*---------------------------------------------------------------------------*/
process_event_t cc26xx_web_demo_publish_event;
process_event_t cc26xx_web_demo_config_loaded_event;
@ -110,6 +117,9 @@ DEMO_SENSOR(batmon_temp, CC26XX_WEB_DEMO_SENSOR_BATMON_TEMP,
DEMO_SENSOR(batmon_volt, CC26XX_WEB_DEMO_SENSOR_BATMON_VOLT,
"Battery Volt", "battery-volt", "batmon_volt",
CC26XX_WEB_DEMO_UNIT_VOLT);
DEMO_SENSOR(adc_dio23, CC26XX_WEB_DEMO_SENSOR_ADC_DIO23,
"ADC DIO23", "adc-dio23", "adc_dio23",
CC26XX_WEB_DEMO_UNIT_VOLT);
/* Sensortag sensors */
#if BOARD_SENSORTAG
@ -467,6 +477,20 @@ get_batmon_reading(void *data)
ctimer_set(&batmon_timer, next, get_batmon_reading, NULL);
}
/*---------------------------------------------------------------------------*/
static void
get_adc_reading(void *data)
{
int value;
char *buf;
if(adc_dio23_reading.publish) {
value = single_adc_sample;
buf = adc_dio23_reading.converted;
memset(buf, 0, CC26XX_WEB_DEMO_CONVERTED_LEN);
snprintf(buf, CC26XX_WEB_DEMO_CONVERTED_LEN, "%d", (value * 4300) >> 12);
}
}
/*---------------------------------------------------------------------------*/
#if BOARD_SENSORTAG
/*---------------------------------------------------------------------------*/
static void
@ -825,6 +849,7 @@ init_sensors(void)
list_add(sensor_list, &batmon_temp_reading);
list_add(sensor_list, &batmon_volt_reading);
list_add(sensor_list, &adc_dio23_reading);
SENSORS_ACTIVATE(batmon_sensor);
#if BOARD_SENSORTAG
@ -864,6 +889,7 @@ PROCESS_THREAD(cc26xx_web_demo_process, ev, data)
/* Start all other (enabled) processes first */
process_start(&httpd_simple_process, NULL);
#if CC26XX_WEB_DEMO_COAP_SERVER
process_start(&coap_server_process, NULL);
#endif
@ -880,13 +906,17 @@ PROCESS_THREAD(cc26xx_web_demo_process, ev, data)
process_start(&net_uart_process, NULL);
#endif
#if CC26XX_WEB_DEMO_ADC_DEMO
process_start(&adc_process, NULL);
#endif
/*
* Now that processes have set their own config default values, set our
* own defaults and restore saved config from flash...
*/
cc26xx_web_demo_config.sensors_bitmap = 0xFFFFFFFF; /* all on by default */
cc26xx_web_demo_config.def_rt_ping_interval =
CC26XX_WEB_DEMO_DEFAULT_RSSI_MEAS_INTERVAL;
CC26XX_WEB_DEMO_DEFAULT_RSSI_MEAS_INTERVAL;
load_config();
/*
@ -966,6 +996,47 @@ PROCESS_THREAD(cc26xx_web_demo_process, ev, data)
PROCESS_END();
}
PROCESS_THREAD(adc_process, ev, data)
{
PROCESS_BEGIN();
static struct etimer et_adc;
etimer_set(&et_adc, CLOCK_SECOND * 5);
while(1) {
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et_adc));
/* intialisation of ADC */
ti_lib_aon_wuc_aux_wakeup_event(AONWUC_AUX_WAKEUP);
while(!(ti_lib_aon_wuc_power_status_get() & AONWUC_AUX_POWER_ON)) {
}
/* Enable clock for ADC digital and analog interface (not currently enabled in driver) */
/* Enable clocks */
ti_lib_aux_wuc_clock_enable(AUX_WUC_ADI_CLOCK | AUX_WUC_ANAIF_CLOCK | AUX_WUC_SMPH_CLOCK);
while(ti_lib_aux_wuc_clock_status(AUX_WUC_ADI_CLOCK | AUX_WUC_ANAIF_CLOCK | AUX_WUC_SMPH_CLOCK) != AUX_WUC_CLOCK_READY) {
}
/* Connect AUX IO7 (DIO23, but also DP2 on XDS110) as analog input. */
ti_lib_aux_adc_select_input(ADC_COMPB_IN_AUXIO7);
/* Set up ADC range */
/* AUXADC_REF_FIXED = nominally 4.3 V */
ti_lib_aux_adc_enable_sync(AUXADC_REF_FIXED, AUXADC_SAMPLE_TIME_2P7_US, AUXADC_TRIGGER_MANUAL);
/* Trigger ADC converting */
ti_lib_aux_adc_gen_manual_trigger();
/* reading adc value */
single_adc_sample = ti_lib_aux_adc_read_fifo();
/* shut the adc down */
ti_lib_aux_adc_disable();
get_adc_reading(NULL);
etimer_reset(&et_adc);
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
/**
* @}