avr_libraries/zh_avr_pcf8574
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feat: added all gpio support

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This commit is contained in:
Alexey Zholtikov
2025-09-03 09:56:56 +03:00
parent 8fa482771e
commit 0bb048531f
3 changed files with 60 additions and 60 deletions
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2
README.md
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@@ -9,7 +9,7 @@
## Note
1. Enable interrupt support only if input GPIO's are used.
2. All the INT GPIO's on the extenders must be connected to the one GPIO on AVR. Only PORTD0 - PORTD7 are acceptable!
2. All the INT GPIO's on the extenders must be connected to the one GPIO on AVR.
3. The input GPIO's are always pullup to the power supply.
## Dependencies

2
include/zh_avr_pcf8574.h
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@@ -44,7 +44,7 @@ extern "C"
bool p6_gpio_work_mode; // Expander GPIO P6 work mode. True for input, false for output.
bool p7_gpio_work_mode; // Expander GPIO P7 work mode. True for input, false for output.
uint8_t interrupt_gpio; // Interrupt GPIO. @attention Must be same for all PCF8574 expanders.
uint8_t interrupt_port; // Interrupt port. @attention Must be same for all PCF8574 expanders.
uint8_t interrupt_port; // Interrupt port.
} zh_avr_pcf8574_init_config_t;
typedef struct // PCF8574 expander handle.

2
zh_avr_pcf8574.c
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@@ -82,7 +82,7 @@ static avr_err_t _zh_avr_pcf8574_validate_config(const zh_avr_pcf8574_init_confi
ZH_ERROR_CHECK(config != NULL, AVR_ERR_INVALID_ARG);
ZH_ERROR_CHECK((config->i2c_address >= 0x20 && config->i2c_address <= 0x27) || (config->i2c_address >= 0x38 && config->i2c_address <= 0x3F), AVR_ERR_INVALID_ARG);
ZH_ERROR_CHECK(config->task_priority > tskIDLE_PRIORITY && config->stack_size >= 124, AVR_ERR_INVALID_ARG);
ZH_ERROR_CHECK(config->interrupt_gpio == 0xFF || (config->interrupt_gpio >= PORTD0 && config->interrupt_gpio <= PORTD7), AVR_ERR_INVALID_ARG);
ZH_ERROR_CHECK(config->interrupt_gpio == 0xFF || (config->interrupt_gpio >= 0 && config->interrupt_gpio <= 7), AVR_ERR_INVALID_ARG);
if (config->interrupt_gpio != 0xFF)
{
ZH_ERROR_CHECK(config->interrupt_port >= AVR_PORTB && config->interrupt_port <= AVR_PORTD, AVR_ERR_INVALID_ARG);