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minor changes

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This commit is contained in:
Gunar Schorcht 2018-01-06 15:37:48 +01:00
parent 62ca216188
commit 03a14e7047
4 changed files with 89 additions and 112 deletions
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52
examples/l3gd20h/l3gd20h_example.c
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@ -1,7 +1,7 @@
/**
* Simple example with one sensor connected to I2C or SPI. It demonstrates the
* different approaches to fetch the data. Either one of the interrupt signals
* for axes movement wake up *INT1* and data ready interrupt *INT2* is used
* for axis movement wake up *INT1* and data ready interrupt *INT2* is used
* or the new data are fetched periodically.
*
* Harware configuration:
@ -31,7 +31,8 @@
* +---------------+ +---------+ +---------------+ +----------+
*/
// use following constants to define the example mode
/* -- use following constants to define the example mode ----------- */
// #define SPI_USED // if defined SPI is used, otherwise I2C
// #define FIFO_MODE // multiple sample read mode
// #define INT_DATA // data interrupts used (data ready and FIFO status)
@ -233,33 +234,27 @@ void user_init(void)
if (sensor)
{
// --- SYSTEM CONFIGURATION PART ----
#ifdef INT_USED
/** --- INTERRUPT CONFIGURATION PART ---- */
#if !defined (INT_USED)
// Interrupt configuration has to be done before the sensor is set
// into measurement mode to avoid losing interrupts
// create a user task that fetches data from sensor periodically
xTaskCreate(user_task_periodic, "user_task_periodic", TASK_STACK_DEPTH, NULL, 2, NULL);
#else // INT_USED
// create a task that is triggered only in case of interrupts to fetch the data
xTaskCreate(user_task_interrupt, "user_task_interrupt", TASK_STACK_DEPTH, NULL, 2, NULL);
// create event queue
// create an event queue to send interrupt events from interrupt
// handler to the interrupt task
gpio_evt_queue = xQueueCreate(10, sizeof(uint8_t));
// configure interupt pins for *INT1* and *INT2* signals and set the interrupt handler
// configure interupt pins for *INT1* and *INT2* signals and set the
// interrupt handler
gpio_enable(INT1_PIN, GPIO_INPUT);
gpio_enable(INT2_PIN, GPIO_INPUT);
gpio_set_interrupt(INT1_PIN, GPIO_INTTYPE_EDGE_POS, int_signal_handler);
gpio_set_interrupt(INT2_PIN, GPIO_INTTYPE_EDGE_POS, int_signal_handler);
#endif // !defined(INT_USED)
#endif // INT_USED
// -- SENSOR CONFIGURATION PART ---
// Interrupt configuration has to be done before the sensor is set
// into measurement mode
/** -- SENSOR CONFIGURATION PART --- */
// set type and polarity of INT signals if necessary
// l3gd20h_config_int_signals (dev, l3gd20h_push_pull, l3gd20h_high_active);
@ -316,7 +311,24 @@ void user_init(void)
l3gd20h_set_scale(sensor, l3gd20h_scale_245_dps);
l3gd20h_set_mode (sensor, l3gd20h_normal_odr_12_5, 3, true, true, true);
// -- SENSOR CONFIGURATION PART ---
/** -- TASK CREATION PART --- */
// must be done last to avoid concurrency situations with the sensor
// configuration part
#ifdef INT_USED
// create a task that is triggered only in case of interrupts to fetch the data
xTaskCreate(user_task_interrupt, "user_task_interrupt", TASK_STACK_DEPTH, NULL, 2, NULL);
#else // INT_USED
// create a user task that fetches data from sensor periodically
xTaskCreate(user_task_periodic, "user_task_periodic", TASK_STACK_DEPTH, NULL, 2, NULL);
#endif
}
else
printf("Could not initialize L3GD20H sensor\n");
}