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				@@ -1,5 +1,6 @@
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				#include "zh_avr_pcf8574.h"
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				TaskHandle_t zh_avr_pcf8574 = NULL;
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				static uint8_t _interrupt_gpio = 0xFF;
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				static uint8_t _interrupt_port = 0;
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				static SemaphoreHandle_t _interrupt_semaphore = NULL;
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				@@ -81,7 +82,7 @@ static avr_err_t _zh_avr_pcf8574_validate_config(const zh_avr_pcf8574_init_confi
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				{
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				    ZH_ERROR_CHECK(config != NULL, AVR_ERR_INVALID_ARG);
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				    ZH_ERROR_CHECK((config->i2c_address >= 0x20 && config->i2c_address <= 0x27) || (config->i2c_address >= 0x38 && config->i2c_address <= 0x3F), AVR_ERR_INVALID_ARG);
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				    ZH_ERROR_CHECK(config->task_priority > tskIDLE_PRIORITY && config->stack_size >= 124, AVR_ERR_INVALID_ARG);
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				    ZH_ERROR_CHECK(config->task_priority > tskIDLE_PRIORITY && config->stack_size >= configMINIMAL_STACK_SIZE, AVR_ERR_INVALID_ARG);
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				    ZH_ERROR_CHECK(config->interrupt_gpio == 0xFF || (config->interrupt_gpio >= 0 && config->interrupt_gpio <= 7), AVR_ERR_INVALID_ARG);
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				    if (config->interrupt_gpio != 0xFF)
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				    {
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				@@ -145,7 +146,7 @@ static avr_err_t _zh_avr_pcf8574_configure_interrupts(const zh_avr_pcf8574_init_
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				    }
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				    _interrupt_semaphore = xSemaphoreCreateBinary();
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				    ZH_ERROR_CHECK(_interrupt_semaphore != NULL, AVR_ERR_NO_MEM);
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				    BaseType_t x_err = xTaskCreate(_zh_avr_pcf8574_isr_processing_task, NULL, config->stack_size, NULL, config->task_priority, NULL);
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				    BaseType_t x_err = xTaskCreate(_zh_avr_pcf8574_isr_processing_task, "zh_avr_pcf8574", config->stack_size, NULL, config->task_priority, &zh_avr_pcf8574);
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				    if (x_err != pdPASS)
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				    {
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				        vSemaphoreDelete(_interrupt_semaphore);
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