用power monitor的at24c02和w25q64电流 - minichao9901/TangNano-20k-Zynq-7020 GitHub Wiki
at24c02程序
/**
*****************************************************************************
* 使用PS端IIC外设读写EEEPROM
*****************************************************************************
*
* @File : main.c
* @By : Sun
* @Version : V1.1
* @Date : 2022 / 06 / 13
*
*****************************************************************************
**/
#include "ACZ702_Lib/COMMON.h"
#define PS_KEY 15
#define PS_LED 11
int main_ps_io(void)
{
uint8_t State; //存放按键(MIO47)的电平状态，0为低电平，1为高电平
PS_GPIO_Init(); //初始化PS端MIO和EMIO
PS_GPIO_SetMode(PS_LED, OUTPUT, 0);
//设置PL_LED(EMIO0)为输出并且初始为低电平
PS_GPIO_SetMode(PS_KEY, INPUT, 0); //设置PS_KEY(MIO47)方向为输入
// while(1)
// {
// State = PS_GPIO_GetPort(PS_KEY); //读取PS_KEY的电平值并存储到State变量里
// PS_GPIO_SetPort(PS_LED,!State); //将State变量的值取非赋予PS_LED来输出
// }
// return 0;
}
#define SEND_PACK_SIZE 8 //EEPROM最多只能连续写一页数据(32byte)
int main(void)
{
uint8_t Write_Data[SEND_PACK_SIZE];
uint8_t Read_Data[SEND_PACK_SIZE];
uint16_t i;
uint16_t Error_Cnt=0;
//PS_IIC_Init(&IIC0,XPAR_XIICPS_0_DEVICE_ID,100000); //初始化设备IIC0，时钟频率为100kHz
AXI_IIC_Init(&AXI_IIC0,XPAR_IIC_0_DEVICE_ID); //初始化设备Iic，时钟频率为100kHz
//将数据0~31放入数组Write_Data里
for(i=0;i<SEND_PACK_SIZE;i++)
{
Write_Data[i]=i;
}
main_ps_io();
while(1){
if(PS_GPIO_GetPort(PS_KEY)==0){
//将0~31写入EEPROM的第一页0~31地址里
//PS_IIC_SeqWrite_Reg(&IIC0,0x50,REG16, 0x00,Write_Data,SEND_PACK_SIZE);
for(int i=0; i<100; i++){
AXI_IIC_SeqWrite_Reg(&AXI_IIC0,0x51,REG8, 0x00,Write_Data,SEND_PACK_SIZE);
usleep(10*000);
}
sleep(1);
//读取EEPROM的第一页0~31地址里的数据，存放在Read_Data数组里
//PS_IIC_SeqRead_Reg(&IIC0, 0x50,REG16, 0x00,Read_Data,SEND_PACK_SIZE);
for(int i=0; i<100; i++){
AXI_IIC_SeqRead_Reg(&AXI_IIC0, 0x51,REG8, 0x00,Read_Data,SEND_PACK_SIZE);
}
//
// //对比Write_Data与Read_Data是否一致
// for(i=0;i<SEND_PACK_SIZE;i++)
// {
// if(Write_Data[i] != Read_Data[i])
// {
// Error_Cnt++;//记录错误数据个数
// }
// }
//
// printf("Error = %d !\n",Error_Cnt);//打印错误数据的个数，全对则为0，代表读写成功
// if(Error_Cnt == 0)
// printf("Write EEPROM successful !!!\n");
// else
// printf("Write EEPROM failed !!!\n");
}
}
}
w25q64程序
#include "ACZ702_Lib/COMMON.h"
#define PS_KEY 15
#define PS_LED 11
int main_ps_io(void)
{
uint8_t State; //存放按键(MIO47)的电平状态，0为低电平，1为高电平
PS_GPIO_Init(); //初始化PS端MIO和EMIO
PS_GPIO_SetMode(PS_LED, OUTPUT, 0);
//设置PL_LED(EMIO0)为输出并且初始为低电平
PS_GPIO_SetMode(PS_KEY, INPUT, 0); //设置PS_KEY(MIO47)方向为输入
// while(1)
// {
// State = PS_GPIO_GetPort(PS_KEY); //读取PS_KEY的电平值并存储到State变量里
// PS_GPIO_SetPort(PS_LED,!State); //将State变量的值取非赋予PS_LED来输出
// }
// return 0;
}
typedef struct{
u8 txbuf[256];
u8 rxbuf[256];
u8 length;
}t_buf;
t_buf WriteBuffer[]={
//s1: read id
{{0x90},{0x00},6},
{{0x9f},{0x00},8},
{{0x4b},{0x00},13},
//s2: sector erase
{{0x06},{0x00},1},
{{0x20,0x00,0x00,0x10},{0x00},4},
{{0xff},{0x00},0}, //length=0 => delay_ms
//s3: page program
{{0x06},{0x00},1},
{{0x02,0x00,0x00,0x10,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88},{0x00},250},
{{0xff},{0x00},0}, //length=0 => delay_ms
//s4: spi/dspi/qspi read
{{0x0b,0x00,0x00,0x10},{0x00},250},
{{0x3b,0x00,0x00,0x10},{0x00},250},
{{0x6b,0x00,0x00,0x10},{0x00},250},
// //s5: sector erase
// {{0x06},{0x00},1},
// {{0x20,0x00,0x00,0x10},{0x00},4},
// {{0xff},{0x00},0}, //length=0 => delay_ms
//
// //s6: qspi program
// {{0x06},{0x00},1},
// {{0x32,0x00,0x00,0x10,0xaa,0xbb,0xcc,0xdd,0xee,0xff,0x11,0x22},{0x00},12},
// {{0xff},{0x00},0}, //length=0 => delay_ms
//
// //s7: qspi read
// {{0x6b,0x00,0x00,0x10},{0x00},14},
// {{0xbb,0x00,0x00,0x10},{0x00},14},
// {{0xeb,0x00,0x00,0x10},{0x00},14},
//s8: enter qpi mode (QE=1), 貌似不支持
// {{0x38},{0x00},1}, //not support
// {{0x01,0x00,0x02},{0x00},3},
// {{0xA3,0x00,0x00,0x00},{0x00},4},
//
// //s9: sector erase
// {{0x06},{0x00},1},
// {{0x20,0x00,0x00,0x10},{0x00},4},
// {{0xff},{0x00},0}, //length=0 => delay_ms
//
// //s10: qpi read
// {{0x0b,0x00,0x00,0x10},{0x00},14},
//
// //s11: qpi program
// {{0x06},{0x00},1},
// {{0x02,0x00,0x00,0x10,0x88,0x77,0x66,0x55,0x44,0x33,0x22,0x11},{0x00},12},
// {{0xff},{0x00},0}, //length=0 => delay_ms
//
// //s12: qpi read
// {{0xbb,0x00,0x00,0x10},{0x00},14},
// {{0xeb,0x00,0x00,0x10},{0x00},14},
};
void print_buffer(u8 *pdata, int length)
{
for(int i=0; i<length; i++){
xil_printf("pdata[%d]=%x\r\n", i, pdata[i]);
}
xil_printf("********************\r\n");
}
void test_flash()
{
for(int i=0; i<sizeof(WriteBuffer)/sizeof(*WriteBuffer); i++){
if(WriteBuffer[i].length==0){
usleep(WriteBuffer[i].txbuf[0]*1000);
continue;
}
AXI_SPI_Transfer(&AXI_SPI0, 0, WriteBuffer[i].rxbuf, WriteBuffer[i].txbuf, WriteBuffer[i].length);
xil_printf("Exec CMD=%x\r\n\r\n", WriteBuffer[i].txbuf[0]);
print_buffer(WriteBuffer[i].rxbuf, WriteBuffer[i].length);
}
}
int main(void)
{
//初始化通用中断控制器
ScuGic_Init();
main_ps_io();
//初始化AXI_SPI0，设为主机模式
AXI_SPI_Init(&AXI_SPI0, XPAR_SPI_0_DEVICE_ID, XSP_MASTER_OPTION);
//初始化私有定时器中断，定时间隔100ms
ScuTimer_Int_Init(100000);
// for(int i=0; i<sizeof(WriteBuffer)/sizeof(*WriteBuffer); i++){
// if(WriteBuffer[i].length==0){
// usleep(WriteBuffer[i].txbuf[0]*1000);
// continue;
// }
//
// AXI_SPI_Transfer(&AXI_SPI0, 0, WriteBuffer[i].rxbuf, WriteBuffer[i].txbuf, WriteBuffer[i].length);
// xil_printf("Exec CMD=%x\r\n\r\n", WriteBuffer[i].txbuf[0]);
// print_buffer(WriteBuffer[i].rxbuf, WriteBuffer[i].length);
// }
while(1) {
//刷新间隔由私有定时器中断控制，中断服务函数在ISR.c中
// if(Refresh_Flag) {
// Refresh_Flag = 0;
//
// //xil_printf("timer run!\r\n");
// }
if(PS_GPIO_GetPort(PS_KEY)==0){
test_flash();
}
}
return 0;
}
at24c02电流波形
图1. 总体波形：wr+rd
图2：wr波形
图3：rd波形
图4：总体波形放大
可以看到，写完后，电流突然变的很小。经过400ms后，电流开始变大。这个时刻似乎芯片发生了一个状态的转变？？ 原因不清楚
w25q64电流波形
图1：总体波形：sector_erase + page_program + 1wire_read + 2wire_read + 4wire_read
图2：sector_erase，Ipp=17mA, Istb=11mA
图3：page_program, Istb=19mA
图4：1wire_read, Ipp=8mA, Istb=1.3mA
图5：2wire_read, 电流异常的大
图6：4wire_read, 电流异常的大
总结
- spi flash电流比eeprom电流大很多倍
- 这颗flash芯片，读的时候电流有较大的peak，原因可能是2点：1）没有挂稳压电容；2）采样率是10us（100kHz），时间不够精细。10us可能都读完了。因此可以把那些电流非常大的peak去掉。
补充，后来又重新测了以下qspi-flash
u8 txBuffer[4096];
u8 rxBuffer[4096];
void test_flash2()
{
// //s1:QE=1
// txBuffer[0]=0x06;
// AXI_SPI_Transfer(&AXI_SPI0, 0, rxBuffer, txBuffer, 1);
//
// txBuffer[0]=0x31;
// txBuffer[1]=1<<1;
// AXI_SPI_Transfer(&AXI_SPI0, 0, rxBuffer, txBuffer, 1);
//s2: sector erase
txBuffer[0]=0x06;
AXI_SPI_Transfer(&AXI_SPI0, 0, rxBuffer, txBuffer, 1);
txBuffer[0]=0x20;
txBuffer[1]=0x00;
txBuffer[2]=0x00;
txBuffer[3]=0x10;
AXI_SPI_Transfer(&AXI_SPI0, 0, rxBuffer, txBuffer, 4);
//pulling_sr();
usleep(100*1000);
//s3: page program
txBuffer[0]=0x06;
AXI_SPI_Transfer(&AXI_SPI0, 0, rxBuffer, txBuffer, 1);
txBuffer[0]=0x02;
txBuffer[1]=0x00;
txBuffer[2]=0x00;
txBuffer[3]=0x10;
for(int i=4; i<4096; i++){
txBuffer[i]=i;
}
AXI_SPI_Transfer(&AXI_SPI0, 0, rxBuffer, txBuffer, 4096);
//pulling_sr();
usleep(100*1000);
//s4: spi/dspi/qspi read
txBuffer[0]=0x0b;
txBuffer[1]=0x00;
txBuffer[2]=0x00;
txBuffer[3]=0x10;
AXI_SPI_Transfer(&AXI_SPI0, 0, rxBuffer, txBuffer, 4096);
usleep(100*1000);
for(int i=0; i<32; i++) xil_printf("%d\r\n", rxBuffer[i]);
xil_printf("*******************\r\n");
txBuffer[0]=0x3b;
txBuffer[1]=0x00;
txBuffer[2]=0x00;
txBuffer[3]=0x10;
AXI_SPI_Transfer(&AXI_SPI0, 0, rxBuffer, txBuffer, 4096);
usleep(100*1000);
for(int i=0; i<32; i++) xil_printf("%d\r\n", rxBuffer[i]);
xil_printf("*******************\r\n");
txBuffer[0]=0x6b;
txBuffer[1]=0x00;
txBuffer[2]=0x00;
txBuffer[3]=0x10;
AXI_SPI_Transfer(&AXI_SPI0, 0, rxBuffer, txBuffer, 4096);
usleep(100*1000);
for(int i=0; i<32; i++) xil_printf("%d\r\n", rxBuffer[i]);
xil_printf("*******************\r\n");
}
感觉：还是2线和4线模式有点异常，刚开始启动的时候有个比较大的电流。