lan9253示例代码
时间: 2023-07-02 13:23:19 浏览: 65
以下是一个基于lan9253的SPI驱动和初始化代码示例,可以帮助你快速开始使用lan9253:
```c
#include <stdint.h>
#include "lan9253.h"
#include "spi.h"
void lan9253_init(void) {
// 配置SPI接口参数
spi_init();
// 发送复位命令
lan9253_reset();
// 配置控制器寄存器
lan9253_write_reg(LAN9253_REG_MAC_ADDR_0, MAC_ADDR_0);
lan9253_write_reg(LAN9253_REG_MAC_ADDR_1, MAC_ADDR_1);
lan9253_write_reg(LAN9253_REG_MAC_ADDR_2, MAC_ADDR_2);
lan9253_write_reg(LAN9253_REG_MAC_ADDR_3, MAC_ADDR_3);
lan9253_write_reg(LAN9253_REG_MAC_ADDR_4, MAC_ADDR_4);
lan9253_write_reg(LAN9253_REG_MAC_ADDR_5, MAC_ADDR_5);
lan9253_write_reg(LAN9253_REG_MODE, MODE_VALUE);
lan9253_write_reg(LAN9253_REG_INT_EN, INT_EN_VALUE);
// 配置PHY寄存器
lan9253_write_phy_reg(PHY_REG_AUTO_NEGOTIATION, AUTO_NEG_VALUE);
lan9253_write_phy_reg(PHY_REG_CONTROL, CONTROL_VALUE);
// 等待控制器完成初始化,检查初始化状态
while (!lan9253_is_ready());
}
void lan9253_reset(void) {
uint8_t cmd[4] = {0x00, 0x00, 0x00, 0x00};
cmd[0] = LAN9253_CMD_RST;
spi_write(cmd, 4);
}
void lan9253_write_reg(uint16_t reg, uint16_t value) {
uint8_t cmd[4] = {0x00, 0x00, 0x00, 0x00};
cmd[0] = LAN9253_CMD_WRITE_REG;
cmd[1] = (uint8_t)(reg >> 8);
cmd[2] = (uint8_t)reg;
cmd[3] = (uint8_t)(value & 0xFF);
spi_write(cmd, 4);
}
void lan9253_write_phy_reg(uint8_t reg, uint16_t value) {
uint8_t cmd[4] = {0x00, 0x00, 0x00, 0x00};
cmd[0] = LAN9253_CMD_WRITE_PHY_REG;
cmd[1] = reg;
cmd[2] = (uint8_t)(value & 0xFF);
cmd[3] = (uint8_t)((value >> 8) & 0xFF);
spi_write(cmd, 4);
}
bool lan9253_is_ready(void) {
uint16_t status = lan9253_read_reg(LAN9253_REG_STATUS);
return ((status & LAN9253_STATUS_READY) == LAN9253_STATUS_READY);
}
uint16_t lan9253_read_reg(uint16_t reg) {
uint8_t cmd[4] = {0x00, 0x00, 0x00, 0x00};
cmd[0] = LAN9253_CMD_READ_REG;
cmd[1] = (uint8_t)(reg >> 8);
cmd[2] = (uint8_t)reg;
cmd[3] = 0x00;
spi_write_read(cmd, cmd, 4);
return ((cmd[2] << 8) | cmd[3]);
}
uint16_t lan9253_read_phy_reg(uint8_t reg) {
uint8_t cmd[4] = {0x00, 0x00, 0x00, 0x00};
cmd[0] = LAN9253_CMD_READ_PHY_REG;
cmd[1] = reg;
cmd[2] = 0x00;
cmd[3] = 0x00;
spi_write_read(cmd, cmd, 4);
return ((cmd[2] << 8) | cmd[3]);
}
```
需要注意的是,这只是一个简单的示例代码,具体实现方式可能会有所不同,特别是在控制器寄存器和PHY寄存器的配置上,需要根据实际情况进行调整。同时,还需要根据具体的硬件平台和操作系统进行适配。