avr_libraries/zh_avr_i2c
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avr_libraries:main
avr_libraries:v1.1.0 avr_libraries:v1.0.0
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compare: avr_libraries:56a61b61634adafee16620b9fd0eb6ac22dcf45d
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avr_libraries:v1.1.0 avr_libraries:v1.0.0

2 Commits
e5303e4090 ... 56a61b6163

Author SHA1 Message Date
Alexey Zholtikov
56a61b6163 wip: 2025-08-10 12:31:38 +03:00
Alexey Zholtikov
fd7969779d wip: 2025-08-10 12:06:34 +03:00
2 changed files with 30 additions and 14 deletions
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40
README.md
View File

@@ -22,18 +22,34 @@ FILE uart = FDEV_SETUP_STREAM(usart, NULL, _FDEV_SETUP_WRITE);
void i2c_example_task(void *pvParameters)
{
zh_avr_i2c_master_init(false);
avr_err_t err = zh_avr_i2c_master_probe(0x38, 100 / portTICK_PERIOD_MS);
switch (err)
for (;;)
{
case AVR_OK:
printf("Slave Answered.\n");
break;
case AVR_ERR_INVALID_RESPONSE:
printf("Slave Not Answer.\n");
break;
default:
printf("Bus Error.\n");
break;
avr_err_t err = zh_avr_i2c_master_probe(0x38, 100 / portTICK_PERIOD_MS);
if (err == AVR_OK)
{
uint8_t data_send = 111;
uint8_t data_read = 0;
printf("Data Send %d.\n", data_send);
zh_avr_i2c_master_transmit(0x38, (uint8_t *)&data_send, sizeof(data_send), 100 / portTICK_PERIOD_MS);
zh_avr_i2c_master_receive(0x38, (uint8_t *)&data_read, sizeof(data_read), 100 / portTICK_PERIOD_MS);
printf("Data Read %d.\n", data_read);
data_send = 55;
printf("Data Send %d.\n", data_send);
zh_avr_i2c_master_transmit(0x38, (uint8_t *)&data_send, sizeof(data_send), 100 / portTICK_PERIOD_MS);
zh_avr_i2c_master_receive(0x38, (uint8_t *)&data_read, sizeof(data_read), 100 / portTICK_PERIOD_MS);
printf("Data Read %d.\n", data_read);
data_send = 14;
printf("Data Send %d.\n", data_send);
zh_avr_i2c_master_transmit(0x38, (uint8_t *)&data_send, sizeof(data_send), 100 / portTICK_PERIOD_MS);
zh_avr_i2c_master_receive(0x38, (uint8_t *)&data_read, sizeof(data_read), 100 / portTICK_PERIOD_MS);
printf("Data Read %d.\n", data_read);
}
else
{
printf("Device Not Found.\n");
}
printf("Task Remaining Stack Size %d.\n", uxTaskGetStackHighWaterMark(NULL));
vTaskDelay(5000 / portTICK_PERIOD_MS);
}
vTaskDelete(NULL);
}
@@ -45,7 +61,7 @@ int main(void)
UCSR0B = (1 << RXEN0) | (1 << TXEN0);
UCSR0C = (1 << UCSZ01) | (1 << UCSZ00);
stdout = &uart;
xTaskCreate(i2c_example_task, "i2c example task", configMINIMAL_STACK_SIZE, NULL, tskIDLE_PRIORITY, NULL);
xTaskCreate(i2c_example_task, "i2c example task", 110, NULL, tskIDLE_PRIORITY, NULL);
vTaskStartScheduler();
return 0;
}

4
zh_avr_i2c.c
View File

@@ -80,12 +80,12 @@ avr_err_t zh_avr_i2c_master_receive(const uint8_t addr, uint8_t *data, uint8_t s
avr_err_t zh_avr_i2c_master_transmit_register(const uint8_t addr, uint16_t *reg, uint8_t *data, uint8_t size, TickType_t xTicksToWait)
{
// To Do.
return _zh_avr_i2c_master_start(xTicksToWait);
return AVR_OK;
}
avr_err_t zh_avr_i2c_master_receive_register(const uint8_t addr, uint16_t *reg, uint8_t *data, uint8_t size, TickType_t xTicksToWait)
{
// To Do.
return _zh_avr_i2c_master_start(xTicksToWait);
return AVR_OK;
}
avr_err_t _zh_avr_i2c_master_start(TickType_t xTicksToWait)