b251427643
Fixed reference to unknown environment var Moved drivers into extras folder and added additional documentations. Changed LOCAL to static and renamed DEBUG to BMP180_DEBUG
132 lines
3.3 KiB
C
132 lines
3.3 KiB
C
/* Simple example for I2C / BMP180 / Timer & Event Handling
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*
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* This sample code is in the public domain.
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*/
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#include "espressif/esp_common.h"
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#include "espressif/sdk_private.h"
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#include "FreeRTOS.h"
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#include "task.h"
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#include "timers.h"
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#include "queue.h"
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// BMP180 driver
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#include "bmp180/bmp180.h"
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#define MY_EVT_TIMER 0x01
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#define MY_EVT_BMP180 0x02
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#define SCL_PIN GPIO_ID_PIN((0))
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#define SDA_PIN GPIO_ID_PIN((2))
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typedef struct
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{
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uint8_t event_type;
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bmp180_result_t bmp180_data;
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} my_event_t;
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// Communication Queue
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static xQueueHandle mainqueue;
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static xTimerHandle timerHandle;
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// Own BMP180 User Inform Implementation
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bool bmp180_i2c_informUser(const xQueueHandle* resultQueue, uint8_t cmd, bmp180_temp_t temperatue, bmp180_press_t pressure)
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{
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my_event_t ev;
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ev.event_type = MY_EVT_BMP180;
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ev.bmp180_data.cmd = cmd;
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ev.bmp180_data.temperatue = temperatue;
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ev.bmp180_data.pressure = pressure;
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return (xQueueSend(*resultQueue, &ev, 0) == pdTRUE);
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}
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// Timer call back
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static void bmp180_i2c_timer_cb(xTimerHandle xTimer)
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{
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my_event_t ev;
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ev.event_type = MY_EVT_TIMER;
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xQueueSend(mainqueue, &ev, 0);
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}
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// Check for communiction events
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void bmp180_task(void *pvParameters)
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{
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// Received pvParameters is communication queue
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xQueueHandle *com_queue = (xQueueHandle *)pvParameters;
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printf("%s: Started user interface task\n", __FUNCTION__);
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while(1)
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{
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my_event_t ev;
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xQueueReceive(*com_queue, &ev, portMAX_DELAY);
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switch(ev.event_type)
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{
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case MY_EVT_TIMER:
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printf("%s: Received Timer Event\n", __FUNCTION__);
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bmp180_trigger_measurement(com_queue);
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break;
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case MY_EVT_BMP180:
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printf("%s: Received BMP180 Event temp:=%ld.%d°C press=%ld.%02ldhPa\n", __FUNCTION__, \
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(int32_t)ev.bmp180_data.temperatue, abs((int32_t)(ev.bmp180_data.temperatue*10)%10), \
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ev.bmp180_data.pressure/100, ev.bmp180_data.pressure%100 );
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break;
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default:
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break;
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}
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}
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}
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// Setup HW
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void user_setup(void)
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{
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// Set UART Parameter
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sdk_uart_div_modify(0, UART_CLK_FREQ / 115200);
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// Give the UART some time to settle
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sdk_os_delay_us(500);
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}
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void user_init(void)
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{
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// Setup HW
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user_setup();
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// Just some infomations
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printf("\n");
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printf("SDK version : %s\n", sdk_system_get_sdk_version());
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printf("GIT version : %s\n", GITSHORTREV);
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// Use our user inform implementation
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bmp180_informUser = bmp180_i2c_informUser;
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// Init BMP180 Interface
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bmp180_init(SCL_PIN, SDA_PIN);
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// Create Main Communication Queue
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mainqueue = xQueueCreate(10, sizeof(my_event_t));
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// Create user interface task
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xTaskCreate(bmp180_task, (signed char *)"bmp180_task", 256, &mainqueue, 2, NULL);
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// Create Timer (Trigger a measurement every second)
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timerHandle = xTimerCreate((signed char *)"BMP180 Trigger", 1000/portTICK_RATE_MS, pdTRUE, NULL, bmp180_i2c_timer_cb);
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if (timerHandle != NULL)
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{
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if (xTimerStart(timerHandle, 0) != pdPASS)
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{
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printf("%s: Unable to start Timer ...\n", __FUNCTION__);
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}
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}
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else
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{
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printf("%s: Unable to create Timer ...\n", __FUNCTION__);
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}
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}
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