STC8G1K08A minimal UART hello world demo

#include "fw_hal.h"

/* Configure UART1 for a plain 8N1 style debug console at 115200 baud.
 * Timer1 is used as the baud-rate generator because that is the default setup
 * already used by the other small demos in this repository.
 */
static void UART_Init(void)
{
    UART1_Config8bitUart(UART1_BaudSource_Timer1, HAL_State_ON, 115200);
}

void main(void)
{
    /* Load the clock trim values from fw_conf.h and switch the MCU to the
     * configured operating frequency before any peripheral timing is derived
     * from SYSCLK.
     */
    SYS_SetClock();

    /* Bring UART1 up once so the loop below can send human-readable output. */
    UART_Init();

    while(1)
    {
        /* Push a single NUL-terminated string out through UART1.
         * The library transmits one byte at a time until it reaches '\0'.
         */
        UART1_TxString("Hello, world from UART1!\r\n");

        /* Wait roughly one second so the terminal output stays readable and
         * the message cadence is easy to verify on a serial adapter.
         */
        SYS_Delay(1000);
    }
}

picocom -b 115200 /dev/ttyUSB0

===== Memory usage summary for uart_hello_world =====
Internal RAM layout:
      0 1 2 3 4 5 6 7 8 9 A B C D E F
0x00:|0|0|0|0|0|0|0|0|Q|Q|Q|Q|S|S|S|S|
0x10:|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|
0x20:|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|
0x30:|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|
0x40:|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|
0x50:|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|
0x60:|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|
0x70:|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|
0x80:|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|
0x90:|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|
0xa0:|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|
0xb0:|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|
0xc0:|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|
0xd0:|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|
0xe0:|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|
0xf0:|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|S|
0-3:Reg Banks, T:Bit regs, a-z:Data, B:Bits, Q:Overlay, I:iData, S:Stack, A:Absolute

Stack starts at: 0x0c (sp set to 0x0b) with 244 bytes available.
No spare internal RAM space left.

Other memory:
   Name             Start    End      Size     Max
   ---------------- -------- -------- -------- --------
   PAGED EXT. RAM                         0      256
   EXTERNAL RAM     0x0001   0x0057      87     1024
   ROM/EPROM/FLASH  0x0000   0x0856    2135     8192
===============================================