[参考译文] RM57L843：lwIP 实现、Dp83640IDGet ()函数返回0 (数据= 0)

您好、Zsoft、

刚刚进行了测试、我可以毫无问题地读取寄存器。 这里是我用于配置 PHY 以及从 PHY 寄存器读取/写入值的代码。

/*包含文件*/

#include "hL_sys_common.h"

/*用户代码开始(1)*/
#include "HL_EMAC.h"
//#include "HL_HW_REG_ACCESS.h"
//#include "HL_HW_MDIO.h"
/*用户代码结束*/

/**@fn void main (void)
*@应用程序主函数简介
*@请注意、默认情况下、此函数为空。
*
*此函数在启动后调用。
*用户可以使用此函数来实现应用程序。
*

/*用户代码开始(2)*/
/*---------------------------------------------- *
* phy_getReg (phynum、Regnum) *
＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊ *
#define mdioUSERACCESS0 *(volatile uint32_t*)(MDIO_base + MDIO_USERACCESS0)
#define mdioCONTROL *(volatile uint32_t*)(MDIO_base + MDIO_control)


uint16_t phy_getReg (uint16_t phynum、uint16_t RegNum)
｛
uint16_t 值；

mdioUSERACCESS0 = 0 //读取 PHY ID 1
|(1 <<31) //[31]开始
|(0 << 30) //[30]读取
|(0 << 29) //[29]采集
|((RegNum & 0x1F)<<21) //[25-21] PHY 寄存器地址
|((phynum & 0x1F)<<16) //[20-16] PHY 地址
|(0 << 0)； //[15-0]数据

while (mdioUSERACCESS0 & 0x8000000)；//等待结果

值= mdioUSERACCESS0；
返回值；
｝

/*---------------------------------------------- *
* phy_setreg (phynum、Regnum、data) *
＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊ *
void phy_setreg (uint16_t phynum、uint16_t Regnum、uint16_t data)
｛
mdioUSERACCESS0 = 0 //读取 PHY ID 1
|(1 <<31) //[31]开始
|(1 <<30) //[30]写入
|(0 << 29) //[29]采集
|((RegNum & 0x1F)<<21) //[25-21] PHY 寄存器地址
|((phynum & 0x1F)<<16) //[20-16] PHY 地址
|((数据和0xFFFF)<<0)； //[15-0]数据

while (mdioUSERACCESS0 & 0x8000000)；//等待结果
｝

void delay (void)｛
静态易失性 unsigned int delayval；
delayval = 10000；// 100000大约为10ms
while (delayval -)；
｝

/*用户代码结束*/

uint8emacAddress[6U]=｛0x11U、0x22U、0x33U、0x44U、0x55U、 0x66U｝；
uint32emacPhyAddress=1U；

int main (空)
｛
/*用户代码开始(3)*/
uint32_t mdio_reg；
uint16_t phy_Ctrl_reg；

_enable_IRQ ()；

/*------------------------------------ *
* Init PHY/MDIO *
＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊ *
mdioCONTROL = 0x41000020； //启用 MII 接口0x40000001

delay()；

mdioUSERACCESS0 = 0 //读取 PHY ID 1
|(1 <<31) //[31]开始
|(0 << 30) //[30]读取
|(0 << 29) //[29]采集
|(2 <<21) //[25-21] PHY 寄存器地址
|(1 <<16) //[20-16] PHY 地址
|(0 << 0)； //[15-0]数据

while (mdioUSERACCESS0 & 0x8000000)；//等待结果

PHY_CTRL_reg = 0
|(0 <<15) //重置
|(0 <<14) //环回
|(1 <<13) //速度选择
|(1 <<12) //自协商启用
|(0 <<11) //断电
|(0 <<10) //隔离
|(0 <<9) //重新启动自动协商
|(1 <<8) //双工模式
|(0 <<7) //冲突测试
|(0 <<6)； //速度选择

mdioUSERACCESS0 = 0 //设置控制寄存器
|(1 <<31) //[31]开始
|(1 <<30) //[30]写入
|(0 << 29) //[29]采集
|(0 << 21) //[25-21] PHY 寄存器地址
|(1 <<16) //[20-16] PHY 地址
|(phy_ctrl_reg << 0)； //[15-0]数据

while (mdioUSERACCESS0 & 0x8000000)；//等待结果

MDIO_reg = phy_getReg (1、0x0)；//应为0x3100
MDIO_reg = phy_getReg (1、0x2)；//应为0x0
MDIO_reg = phy_getReg (1、0x16)；
MDIO_reg = phy_getReg (1、0x19)；
MDIO_reg = phy_getReg (1、0x18)；
MDIO_reg = phy_getReg (1、0x1B)；
/*等待链接*/
//正在等待链接...
while ((phy_getReg (1、1)& 0x4)==0)；

/*用户代码结束*/

返回0；
｝