STC8A8K64S4A12單片機寄存器T24M_ADDR和T22M1184_ADDR如何讀取?

ID:912806 · 發表于 2021-11-8 22:11

根據手冊上寫的地址去讀, 讀出來都是FF

根據STC-ISP的提示, 勾選了"在程序區結束處添加重要測試參數", 再下載, 再讀這些地址的值, 還是FF

手冊里給的地址不對?

有沒有誰成功讀過這兩個值的? 我想在程序里直接切換到對應的頻率, 而不是通過ISP燒錄去更新

ID:624769 · 發表于 2021-11-9 00:09

讀過，正好前面再做實驗，用的又剛好是 8A8K 就順便再讀了一次。

如圖：

ID:863432 · 發表于 2021-11-9 10:55

在STCISP軟件中，可嘗試選擇Flash空白區域的填充值為00

ID:912806 · 發表于 2021-11-9 11:19

多謝回復. 我又試了一遍, 好像還是不行, 奇怪是我的代碼不對, 還是下載的配置不對? 還是這個芯片版本的差異?
下載配置能否往下拉一點截個屏看看完整的? 還有芯片版本是多少? 我這個是7.3.12U, 這個是比較近期的版本

測試代碼

#include "stc8.h"
typedef unsigned char u8;
typedef unsigned int u16;
static const char hexTable[16] = { '0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
void timer_init()
{
// [ BAH,0,0x00]: 外設端口切換寄存器2
P_SW2 = 0x80;
// [ D6H,0,0x00]: 定時器2高字節
T2H = 0xFF;
// [ D7H,0,0x00]: 定時器2低字節
T2L = 0xD0;
// [ BAH,0,0x00]: 外設端口切換寄存器2
P_SW2 = 0x00;
// [ 87H,0,0x30]: 電源控制寄存器
PCON = 0xB0;
// [ 8EH,0,0x01]: 輔助寄存器
AUXR = 0x15;
}
void uart_init()
{
// [ 98H,0,0x00]: 串口1控制寄存器
SCON = 0x50;
// [ 87H,0,0x30]: 電源控制寄存器
PCON = 0xB0;
// [ 8EH,0,0x01]: 輔助寄存器
AUXR = 0x15;
}
void PrintString(u8 *str)
{
while (*str != '\0')
{
SBUF = *str;
while(!TI);
TI = 0; /* clear */
str++;
}
}
void PrintChar(u8 dat)
{
SBUF = dat;
while(!TI);
TI = 0;
}
void PrintHex(u8 hex)
{
PrintChar(hexTable[hex >> 4]);
PrintChar(hexTable[hex & 0xF]);
}
void Delay1000ms() //@22.1184MHz
{
unsigned char i, j, k;
i = 113;
j = 53;
k = 228;
do
{
do
{
while (--k);
} while (--j);
} while (--i);
}
void main(void)
{
unsigned char i, t1, t2, t3, t4;
unsigned int pos;
t1 = (char code *)0xFDF3;
t2 = (char code *)0xFDF4;
t3 = (char code *)0xFDF5;
t4 = (char code *)0xFDF7;
P0M1 = 0x00; P0M0 = 0x00; //設置為準雙向口
P1M1 = 0x00; P1M0 = 0x00; //設置為準雙向口
P2M1 = 0x00; P2M0 = 0x00; //設置為準雙向口
P3M1 = 0x00; P3M0 = 0x00; //設置為準雙向口
P4M1 = 0x00; P4M0 = 0x00; //設置為準雙向口
P5M1 = 0x00; P5M0 = 0x00; //設置為準雙向口
P6M1 = 0x00; P6M0 = 0x00; //設置為準雙向口
P7M1 = 0x00; P7M0 = 0x00; //設置為準雙向口
timer_init();
uart_init();
while(1)
{
PrintHex(IRTRIM);
PrintChar(0x20);
PrintHex(t1);
PrintChar(0x20);
PrintHex(t2);
PrintChar(0x20);
PrintHex(t3);
PrintChar(0x20);
PrintHex(t4);
PrintChar(0x20);
pos = 0xFDF3;
for(i = 0; i < 13; i++)
{
PrintHex((char code *)pos);
pos++;
}
PrintChar(0x20);
PrintString("\r\n");
Delay1000ms();
}
}

復制代碼

燒錄的日志

Current H/W Option:
. ISP-IRC frequency: 24.110MHz
. IRC frequency: 22.124MHz
. Wakeup Timer frequency: 34.250KHz
. Oscillator gain is HIGH
. Do not detect the level of P3.2 and P3.3 next download
. Power-on reset, use the extra power-on delay
. RESET pin behaves as IO pin
. Reset while detect a Low-Voltage
. Thresh voltage level of the built-in LVD : 2.20 V
. Hardware do not enable Watch-Dog-Timer
. Watch-Dog-Timer pre-scalar : 256
. Watch-Dog-Timer stop count in idle mode
. Program can modify the Watch-Dog-Timer scalar
. Erase user EEPROM area at next download
. Do not control 485 at next download
. Do not check user password next download
. TXD is independent IO
. TXD pin as quasi-bidirectional mode after reset
. P2.0 output HIGH level after reset
. Reference voltage: 1341 mV (Range: 1270~1410mV)
. Testing time: 2021-4-23
MCU type: STC8A8K64S4A12
F/W version: 7.3.12U
Adjusting frequency ... [0.688"]
Adjusted frequency: 22.124MHz (0.027%)
Re-handshaking ... Successful [0.125"]
Current Baudrate: 115200
Erasing MCU flash ... OK ! [1.266"]
MCU ID : F628C57D0BC117
Programming user code ... OK ! [0.156"]
Programming OPTIONS ... OK ! [0.032"]
H/W Option upgrade to:
. ISP-IRC frequency: 24.110MHz
. IRC frequency: 22.124MHz
. Wakeup Timer frequency: 34.250KHz
. Oscillator gain is HIGH
. Do not detect the level of P3.2 and P3.3 next download
. Power-on reset, use the extra power-on delay
. RESET pin behaves as IO pin
. Reset while detect a Low-Voltage
. Thresh voltage level of the built-in LVD : 2.20 V
. Hardware do not enable Watch-Dog-Timer
. Watch-Dog-Timer pre-scalar : 256
. Watch-Dog-Timer stop count in idle mode
. Program can modify the Watch-Dog-Timer scalar
. Erase user EEPROM area at next download
. Do not control 485 at next download
. Do not check user password next download
. TXD is independent IO
. TXD pin as quasi-bidirectional mode after reset
. P2.0 output HIGH level after reset
. Reference voltage: 1341 mV (Range: 1270~1410mV)
. Testing time: 2021-4-23
MCU ID : F628C57D0BC117
MCU type: STC8A8K64S4A12
F/W version: 7.3.12U
. Set frequency: 22.118MHz
. Adjusted frequency: 22.124MHz
. Trim error: 0.027%
Complete !(2021-11-09 11:10:00)

復制代碼

輸出: 這里5B是從IRTRIM里讀取的正確的值, 后面輸出的都有問題

5B F3 F4 F5 F7 F3F4F5F6F7F8F9FAFBFCFDFEFF
5B F3 F4 F5 F7 F3F4F5F6F7F8F9FAFBFCFDFEFF
5B F3 F4 F5 F7 F3F4F5F6F7F8F9FAFBFCFDFEFF
5B F3 F4 F5 F7 F3F4F5F6F7F8F9FAFBFCFDFEFF
5B F3 F4 F5 F7 F3F4F5F6F7F8F9FAFBFCFDFEFF
5B F3 F4 F5 F7 F3F4F5F6F7F8F9FAFBFCFDFEFF

復制代碼

ID:912806 · 發表于 2021-11-9 11:45

我用這個測試代碼讀出來了, 得查查是哪里的差異. 在ISP軟件里下載的時候, 測了下必須要勾選那個"在程序區結束處添加重要測試參數", 不然只有CPUID有值, 前面部分都是FF

#include "stc8.h"
#include "intrins.h"
#define FOSC 11059200UL
#define BRT (65536 - FOSC / 115200 / 4)
bit busy;
char *ID;
void UartIsr() interrupt 4
{
if (TI)
{
TI = 0;
busy = 0;
}
if (RI)
{
RI = 0;
}
}
void UartInit()
{
SCON = 0x50;
TMOD = 0x00;
TL1 = BRT;
TH1 = BRT >> 8;
TR1 = 1;
AUXR = 0x40;
busy = 0;
}
void UartSend(char dat)
{
while (busy);
busy = 1;
SBUF = dat;
}
void Delay1000ms() //@22.1184MHz
{
unsigned char i, j, k;
i = 55;
j = 53;
k = 228;
do
{
do
{
while (--k);
} while (--j);
} while (--i);
}
void main()
{
char i;
ID = (char code *)0xfdf3; // STC8A8K64S4A10
UartInit();
ES = 1;
EA = 1;
while(1)
{
for (i = 0; i < 13; i++)
{
UartSend(ID[i]);
}
UartSend(0x00);
UartSend(0x00);
Delay1000ms();
}
}

復制代碼

"在程序區結束處添加重要測試參數" 不勾選和勾選的區別

ID:624769 · 發表于 2021-11-9 13:45

michaelchain 發表于 2021-11-9 11:45
我用這個測試代碼讀出來了, 得查查是哪里的差異. 在ISP軟件里下載的時候, 測了下必須要勾選那個"在程序區結 ...

#include <STC\STC8.H>

#define MainForce 22118400UL
#define Baud (65536 - MainForce/460800/4)

bit busy;
char Temp;

char ReadCode(int addr)
{
return *(char code *)(addr);
}

void UartInit()
{
SCON = 0x50;
TMOD = 0x00;
TL1 = Baud;
TH1 = Baud >> 8;
TR1 = 1;
AUXR = 0x40;
busy = 0;
}

void UartSend(char dat)
{
while(busy);
busy = 1;
SBUF = dat;
}

void main()
{
Temp = ReadCode(0xFDf3);
UartInit();
ES = 1;
EA = 1;
UartSend(Temp);
while(1);
}

void UartIsr() interrupt 4
{
if(TI)
{
TI = 0;
busy = 0;
}
if(RI)
{
RI = 0;

}

}

ID:624769 · 發表于 2021-11-9 14:59

michaelchain 發表于 2021-11-9 11:45
我用這個測試代碼讀出來了, 得查查是哪里的差異. 在ISP軟件里下載的時候, 測了下必須要勾選那個"在程序區結 ...

給你一個可以讀全部Flash 的，你自己讀看看吧。

接收用文本方式，發送用 16進制發送地址高8位會返回整個 256 字節（半個扇區）的內容。
晶振和波特率，我用的22.1184 和 460800，你可以自行修改定義。

Read_OnChip_Flash.rar (24.63 KB, 下載次數: 2)

ID:912806 · 發表于 2021-11-9 15:38

多謝, 我找到是什么問題了. 這個地址應該從code區讀取, 而不是從xdata, 之前代碼寫得不對
另外, stc8a8k64s4 在ISP下載時會修改CLKDIV, 這個要在代碼里指定為0, 不然只調IRTRIM無效

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STC8A8K64S4A12單片機寄存器T24M_ADDR和T22M1184_ADDR如何讀取?