Add example HTTP client
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4 changed files with 267 additions and 2 deletions
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@ -57,9 +57,9 @@ MODULE_INCDIR += include/lwip include/lwip/ipv4 include/lwip/ipv6
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SDK_INCDIR=include/espressif
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# libraries to link, mainly blobs provided by the esp-iot-rtos SDK
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LIBS ?= c gcc json lwip main net80211 phy pp ssl udhcp wpa hal
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LIBS ?= gcc json lwip main net80211 phy pp ssl udhcp wpa hal
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CFLAGS = -Wall -Werror -Wl,-EL -nostdlib -mlongcalls -mtext-section-literals
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CFLAGS = -Wall -Werror -Wl,-EL -nostdlib -mlongcalls -mtext-section-literals -std=gnu99
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LDFLAGS = -nostdlib -Wl,--no-check-sections -Wl,-L$(ROOT)lib -u call_user_start -Wl,-static -Wl,-Map=build/${TARGET}.map
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ifeq ($(FLAVOR),debug)
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141
examples/http_get/FreeRTOSConfig.h
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141
examples/http_get/FreeRTOSConfig.h
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/*
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FreeRTOS V7.5.2 - Copyright (C) 2013 Real Time Engineers Ltd.
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VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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***************************************************************************
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* *
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* FreeRTOS provides completely free yet professionally developed, *
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* robust, strictly quality controlled, supported, and cross *
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* platform software that has become a de facto standard. *
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* *
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* Help yourself get started quickly and support the FreeRTOS *
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* project by purchasing a FreeRTOS tutorial book, reference *
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* manual, or both from: http://www.FreeRTOS.org/Documentation *
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* *
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* Thank you! *
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* *
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***************************************************************************
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License (version 2) as published by the
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Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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>>! NOTE: The modification to the GPL is included to allow you to distribute
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>>! a combined work that includes FreeRTOS without being obliged to provide
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>>! the source code for proprietary components outside of the FreeRTOS
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>>! kernel.
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. Full license text is available from the following
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link: http://www.freertos.org/a00114.html
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1 tab == 4 spaces!
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***************************************************************************
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* *
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* Having a problem? Start by reading the FAQ "My application does *
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* not run, what could be wrong?" *
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* *
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* http://www.FreeRTOS.org/FAQHelp.html *
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* *
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***************************************************************************
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http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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license and Real Time Engineers Ltd. contact details.
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http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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compatible FAT file system, and our tiny thread aware UDP/IP stack.
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http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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licenses offer ticketed support, indemnification and middleware.
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http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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engineered and independently SIL3 certified version for use in safety and
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mission critical applications that require provable dependability.
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1 tab == 4 spaces!
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*/
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#ifndef FREERTOS_CONFIG_H
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#define FREERTOS_CONFIG_H
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/*-----------------------------------------------------------
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* Application specific definitions.
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*
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* These definitions should be adjusted for your particular hardware and
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* application requirements.
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*
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* THESE PARAMETERS ARE DESCRIBED WITHIN THE 'CONFIGURATION' SECTION OF THE
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* FreeRTOS API DOCUMENTATION AVAILABLE ON THE FreeRTOS.org WEB SITE.
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*
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* See http://www.freertos.org/a00110.html.
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*----------------------------------------------------------*/
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#define configUSE_PREEMPTION 1
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#define configUSE_IDLE_HOOK 0
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#define configUSE_TICK_HOOK 0
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#define configCPU_CLOCK_HZ ( ( unsigned long ) 80000000 )
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#define configTICK_RATE_HZ ( ( portTickType ) 100 )
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#define configMAX_PRIORITIES ( ( unsigned portBASE_TYPE ) 15 )
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#define configMINIMAL_STACK_SIZE ( ( unsigned short )156 )
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#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 32 * 1024 ) )
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#define configMAX_TASK_NAME_LEN ( 16 )
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#define configUSE_TRACE_FACILITY 0
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#define configUSE_STATS_FORMATTING_FUNCTIONS 0
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#define configUSE_16_BIT_TICKS 0
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#define configIDLE_SHOULD_YIELD 1
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#define INCLUDE_xTaskGetIdleTaskHandle 1
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#define INCLUDE_xTimerGetTimerDaemonTaskHandle 1
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#define configCHECK_FOR_STACK_OVERFLOW 2
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#define configUSE_MUTEXES 1
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#define configUSE_TIMERS 1
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#if configUSE_TIMERS
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#define configTIMER_TASK_PRIORITY ( tskIDLE_PRIORITY + 2 )
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#define configTIMER_QUEUE_LENGTH (10)
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#define configTIMER_TASK_STACK_DEPTH ( ( unsigned short ) 512 )
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#endif
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/* Co-routine definitions. */
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#define configUSE_CO_ROUTINES 0
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#define configMAX_CO_ROUTINE_PRIORITIES ( 2 )
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/* Set the following definitions to 1 to include the API function, or zero
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to exclude the API function. */
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#define INCLUDE_vTaskPrioritySet 1
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#define INCLUDE_uxTaskPriorityGet 1
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#define INCLUDE_vTaskDelete 1
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#define INCLUDE_vTaskCleanUpResources 0
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#define INCLUDE_vTaskSuspend 1
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#define INCLUDE_vTaskDelayUntil 1
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#define INCLUDE_vTaskDelay 1
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/*set the #define for debug info*/
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#define INCLUDE_xTaskGetCurrentTaskHandle 1
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#define INCLUDE_uxTaskGetStackHighWaterMark 1
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/* This is the raw value as per the Cortex-M3 NVIC. Values can be 255
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(lowest) to 0 (1?) (highest). */
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#define configKERNEL_INTERRUPT_PRIORITY 255
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/* !!!! configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to zero !!!!
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See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
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#define configMAX_SYSCALL_INTERRUPT_PRIORITY 191 /* equivalent to 0xb0, or priority 11. */
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/* This is the value being used as per the ST library which permits 16
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priority values, 0 to 15. This must correspond to the
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configKERNEL_INTERRUPT_PRIORITY setting. Here 15 corresponds to the lowest
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NVIC value of 255. */
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#define configLIBRARY_KERNEL_INTERRUPT_PRIORITY 15
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#endif /* FREERTOS_CONFIG_H */
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2
examples/http_get/Makefile
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2
examples/http_get/Makefile
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TARGET=http_get
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include ../../common.mk
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122
examples/http_get/main.c
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122
examples/http_get/main.c
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#include "esp_common.h"
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#include "FreeRTOS.h"
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#include "task.h"
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#include "lwip/sockets.h"
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#include "lwip/dns.h"
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#include "lwip/netdb.h"
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#include "espressif/blob_prototypes.h"
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#define WEB_SERVER "chainxor.org"
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#define WEB_PORT 80
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#define WEB_URL "http://chainxor.org/"
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/* FILL THESE IN!!!!!!!!!! */
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#define WIFI_SSID "SSID Name Here"
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#define WIFI_PASS "Wifi Password Here"
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void http_get_task(void *pvParameters)
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{
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int successes = 0, failures = 0;
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printf("HTTP get task starting...\r\n");
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while(1) {
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const struct addrinfo hints = {
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.ai_family = AF_INET,
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.ai_socktype = SOCK_STREAM,
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};
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struct addrinfo *res;
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printf("Running DNS lookup for %s...\r\n", WEB_SERVER);
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int err = getaddrinfo(WEB_SERVER, "80", &hints, &res);
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if(err != 0 || res == NULL) {
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printf("DNS lookup failed err=%d res=%p\r\n", err, res);
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if(res)
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freeaddrinfo(res);
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vTaskDelay(1000 / portTICK_RATE_MS);
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failures++;
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continue;
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}
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printf("DNS lookup succeeded. IP=%s\r\n", inet_ntoa(res->ai_addr));
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int s = socket(res->ai_family, res->ai_socktype, 0);
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if(s < 0) {
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printf("... Failed to allocate socket.\r\n");
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freeaddrinfo(res);
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vTaskDelay(1000 / portTICK_RATE_MS);
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failures++;
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continue;
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}
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printf("... allocated socket\r\n");
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if(connect(s, res->ai_addr, res->ai_addrlen) != 0) {
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close(s);
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freeaddrinfo(res);
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printf("... socket connect failed.\r\n");
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vTaskDelay(4000 / portTICK_RATE_MS);
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failures++;
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continue;
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}
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printf("... connected\r\n");
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freeaddrinfo(res);
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const char *req =
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"GET "WEB_URL"\r\n"
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"User-Agent: esp-open-rtos/0.1 esp8266\r\n"
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"\r\n";
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if (write(s, req, strlen(req) + 1) < 0) {
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printf("... socket send failed\r\n");
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close(s);
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vTaskDelay(4000 / portTICK_RATE_MS);
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failures++;
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continue;
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}
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printf("... socket send success\r\n");
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static char recv_buf[128];
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int r;
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do {
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bzero(recv_buf, 128);
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r = read(s, recv_buf, 127);
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if(r > 0) {
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printf("%s", recv_buf);
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}
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} while(r > 0);
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printf("... done reading from socket. Last read return=%d errno=%d\r\n", r, errno);
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if(r != 0)
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failures++;
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else
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successes++;
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close(s);
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printf("successes = %d failures = %d\r\n", successes, failures);
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for(int countdown = 10; countdown >= 0; countdown--) {
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printf("%d... ", countdown);
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vTaskDelay(1000 / portTICK_RATE_MS);
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}
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printf("\r\nStarting again!\r\n");
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}
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}
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void user_init(void)
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{
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uart_div_modify(0, UART_CLK_FREQ / 115200);
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printf("SDK version:%s\n", system_get_sdk_version());
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struct station_config config = {
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.ssid = WIFI_SSID,
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.password = WIFI_PASS,
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};
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/* required to call wifi_set_opmode before station_set_config */
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wifi_set_opmode(STATIONAP_MODE);
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wifi_station_set_config(&config);
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xTaskCreate(&http_get_task, (signed char *)"get_task", 256, NULL, 2, NULL);
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}
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