Keil编译环境下使用定时器1作为串口波特率发生器报错

[perseverance51]

在uart1_timer1_tx.c文件中原外部变量引入：

extern __CODE uint16_t ticks_ms; extern __CODE uint8_t ticks_us, clkdiv;

需要如下修改：
`
#if defined (SDCC) || defined (__SDCC)
extern __CODE uint16_t ticks_ms;
extern __CODE uint8_t ticks_us; //clkdiv (include fw_reg_stc8h.h)
#elif defined CX51
extern uint16_t code ticks_ms;
extern uint8_t code ticks_us;
#endif

……

UART1_TxHex(CLKDIV);//改成大写

在fw_sys.c文件中调整如下：
#if defined (SDCC) || defined (__SDCC)
__CODE uint16_t ticks_ms = (__CONF_FOSC / ((__CONF_CLKDIV == 0)? 1 : __CONF_CLKDIV) / __CLK_REF);
__CODE uint8_t ticks_us = (__CONF_FOSC / ((__CONF_CLKDIV == 0)? 1 : __CONF_CLKDIV) / __CLK_REF / 1000);
#elif defined CX51
uint16_t code ticks_ms = (__CONF_FOSC / ((__CONF_CLKDIV == 0)? 1 : __CONF_CLKDIV) / __CLK_REF);
uint8_t code ticks_us = (__CONF_FOSC / ((__CONF_CLKDIV == 0)? 1 : __CONF_CLKDIV) / __CLK_REF / 1000);
#endif
`

[IOsetting]

Thank you for the report. The code should work as __CODE macro will be translated to code in __CX51__, which is defined in fw_reg_base.h

#elif defined __CX51__
...
    #define __CODE  code
    #define __REENTRANT  reentrant

I will test it in Keil C51 later.

[IOsetting]

The commit e2024f5 has fixed this issue.