101 lines
3.2 KiB
C
101 lines
3.2 KiB
C
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/**
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* Copyright (c) HiSilicon (Shanghai) Technologies Co., Ltd. 2023-2023. All rights reserved.
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*
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* Description: I2C Sample Source. \n
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*
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* History: \n
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* 2023-05-25, Create file. \n
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*/
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#include "pinctrl.h"
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#include "i2c.h"
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#include "soc_osal.h"
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#include "app_init.h"
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#if defined(CONFIG_I2C_SUPPORT_DMA) && (CONFIG_I2C_SUPPORT_DMA == 1)
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#include "dma.h"
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#endif
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#define I2C_SLAVE_ADDR 0x8
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#define I2C_SET_BAUDRATE 500000
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#define I2C_TASK_DURATION_MS 100
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#if defined(CONFIG_I2C_SUPPORT_DMA) && (CONFIG_I2C_SUPPORT_DMA == 1)
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#define I2C_DMA_TRANSFER_DELAY_MS 500
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#endif
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#define I2C_TASK_PRIO 24
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#define I2C_TASK_STACK_SIZE 0x1000
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static void app_i2c_init_pin(void)
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{
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/* I2C pinmux. */
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uapi_pin_set_mode(CONFIG_I2C_SCL_SLAVE_PIN, CONFIG_I2C_SLAVE_PIN_MODE);
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uapi_pin_set_mode(CONFIG_I2C_SDA_SLAVE_PIN, CONFIG_I2C_SLAVE_PIN_MODE);
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}
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void *i2c_slave_task(const char *arg)
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{
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unused(arg);
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i2c_data_t data = { 0 };
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uint32_t baudrate = I2C_SET_BAUDRATE;
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uint16_t dev_addr = I2C_SLAVE_ADDR;
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#if defined(CONFIG_I2C_SUPPORT_DMA) && (CONFIG_I2C_SUPPORT_DMA == 1)
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uapi_dma_init();
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uapi_dma_open();
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#endif /* CONFIG_I2C_SUPPORT_DMA */
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/* I2C slave init config. */
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app_i2c_init_pin();
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uapi_i2c_slave_init(CONFIG_I2C_SLAVE_BUS_ID, baudrate, dev_addr);
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#if defined(CONFIG_I2C_SUPPORT_INT) && (CONFIG_I2C_SUPPORT_INT == 1)
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uapi_i2c_set_irq_mode(CONFIG_I2C_SLAVE_BUS_ID, 1);
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#endif /* CONFIG_I2C_SUPPORT_INT */
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/* I2C data config. */
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uint8_t tx_buff[CONFIG_I2C_TRANSFER_LEN] = { 0 };
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for (uint32_t loop = 0; loop < CONFIG_I2C_TRANSFER_LEN; loop++) {
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tx_buff[loop] = (loop & 0xFF);
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}
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uint8_t rx_buff[CONFIG_I2C_TRANSFER_LEN] = { 0 };
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data.send_buf = tx_buff;
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data.send_len = CONFIG_I2C_TRANSFER_LEN;
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data.receive_buf = rx_buff;
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data.receive_len = CONFIG_I2C_TRANSFER_LEN;
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while (1) {
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osal_msleep(I2C_TASK_DURATION_MS);
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osal_printk("i2c%d slave receive start!\r\n", CONFIG_I2C_SLAVE_BUS_ID);
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if (uapi_i2c_slave_read(CONFIG_I2C_SLAVE_BUS_ID, &data) == ERRCODE_SUCC) {
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for (uint32_t i = 0; i < data.receive_len; i++) {
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osal_printk("i2c slave receive data is %x\r\n", data.receive_buf[i]);
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}
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osal_printk("i2c%d slave receive succ!\r\n", CONFIG_I2C_SLAVE_BUS_ID);
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}
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osal_printk("i2c%d slave send start!\r\n", CONFIG_I2C_SLAVE_BUS_ID);
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#if defined(CONFIG_I2C_SUPPORT_DMA) && (CONFIG_I2C_SUPPORT_DMA == 1)
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osal_msleep(I2C_DMA_TRANSFER_DELAY_MS);
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#endif
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if (uapi_i2c_slave_write(CONFIG_I2C_SLAVE_BUS_ID, &data) == ERRCODE_SUCC) {
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osal_printk("i2c%d slave send succ!\r\n", CONFIG_I2C_SLAVE_BUS_ID);
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}
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}
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return NULL;
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}
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static void i2c_slave_entry(void)
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{
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osal_task *task_handle = NULL;
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osal_kthread_lock();
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task_handle = osal_kthread_create((osal_kthread_handler)i2c_slave_task, 0, "I2cSlaveTask", I2C_TASK_STACK_SIZE);
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if (task_handle != NULL) {
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osal_kthread_set_priority(task_handle, I2C_TASK_PRIO);
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osal_kfree(task_handle);
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}
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osal_kthread_unlock();
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}
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/* Run the i2c_slave_entry. */
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app_run(i2c_slave_entry);
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