// Copyright 2021 IOsetting <iosetting(at)outlook.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

/***
 * Demo:  XL2400 / WL2400 SOP8 2.4GHz RF, Emulate SPI on GPIO pins
 * 
 *    Pin connection:
 *    P35              => CSN
 *    P34              => DATA
 *    P32              => SCK
 *                        VDD1     => 3.3V
 *                        XC1,XC2  => 16MHz OSC
 *                        GND      => GND
 * 
 * test-board: Minimum System; test-MCU: STC8H1K08,STC8H3K64S2
 */

#include "fw_hal.h"
#include "xl2400.h"

// 0:TX, 1:RX
#define XL2400_MODE 0

__CODE uint8_t TX_ADDRESS[5] = {0x11,0x33,0x33,0x33,0x11};
__CODE uint8_t RX_ADDRESS[5] = {0x33,0x55,0x33,0x44,0x33};

uint8_t XL2400_PrintStatus(void);

void GPIO_Init(void)
{
    GPIO_P3_SetMode(GPIO_Pin_4, GPIO_Mode_InOut_QBD);
    // SCLK(P32) CSN(P35)
    GPIO_P3_SetMode(GPIO_Pin_2|GPIO_Pin_5, GPIO_Mode_Output_PP);
}

int main(void)
{
    __CODE uint8_t tmp[] = {
        0x1F, 0x80, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18,
        0x21, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x28,
        0x31, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x38,
        0x41, 0x12, 0x13, 0x14, 0x15, 0x16, 0x37, 0x48};
    uint8_t i, j, status;

    SYS_SetClock();
    GPIO_Init();

    // UART1, baud 115200, baud source Timer1, 1T mode, no interrupt
    UART1_Config8bitUart(UART1_BaudSource_Timer1, HAL_State_ON, 115200);
    UART1_TxString("UART Initialized\r\n");

    while (XL2400_SPI_Test() == HAL_ERROR)
    {
        UART1_TxString(" - check failed\r\n");
        SYS_Delay(1000);
    }
    UART1_TxString(" - check passed\r\n");

    XL2400_Init();
    XL2400_SetPower(XL2400_RF_0DB);


#if XL2400_MODE == 0
    XL2400_SetChannel(78);
    XL2400_SetTxAddress(RX_ADDRESS);
    XL2400_SetRxAddress(TX_ADDRESS);
    XL2400_SetTxMode();
    UART1_TxString("XL2400 TX Initialized\r\n");

    while(1)
    {
        //XL2400_PrintStatus();
        status = XL2400_Tx(tmp, XL2400_PLOAD_WIDTH);
        
        i++;
        if (status == 0x20)
        {
            j++;
        }
        if (i == 0)
        {
            UART1_TxHex(j);
            UART1_TxString("\r\n");
            j = 0;
        }
        // >= 2ms
        SYS_Delay(3);
    }
#else
    // RX
    XL2400_SetChannel(77);
    XL2400_SetTxAddress(RX_ADDRESS);
    XL2400_SetRxAddress(TX_ADDRESS);
    XL2400_WakeUp();
    UART1_TxString("XL2400 RX Initialized\r\n");

    while(1)
    {
        XL2400_SetRxMode();
        while (--j)
        {
            status = XL2400_Rx();
            if (status & RX_DR_FLAG)
            {
                UART1_TxString(".");
            }
        }
        //XL2400_PrintStatus();
        //XL2400_Sleep();
        //SYS_Delay(1);
    }
#endif
}