85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
// Copyright 2021 IOsetting <iosetting(at)outlook.com>
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/***
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* Demo: RX8025T I2C RTC/TCXO
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* Board: STC8H3K32
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*
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* P32 -> SCL
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* P33 -> SDA
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* GND -> GND
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* 3.3V -> VCC
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*/
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#include "fw_hal.h"
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#include "rx8025t.h"
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#define BUFF_SIZE 16
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__XDATA uint8_t time[BUFF_SIZE];
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void I2C_Init(void)
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{
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// Master mode
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I2C_SetWorkMode(I2C_WorkMode_Master);
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/**
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* I2C clock = FOSC / 2 / (__prescaler__ * 2 + 4)
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*/
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I2C_SetClockPrescaler(0x3F);
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// Switch alternative port
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I2C_SetPort(I2C_AlterPort_P32_P33);
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// Start I2C
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I2C_SetEnabled(HAL_State_ON);
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}
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void GPIO_Init(void)
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{
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// SDA
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GPIO_P3_SetMode(GPIO_Pin_3, GPIO_Mode_InOut_QBD);
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// SCL
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GPIO_P3_SetMode(GPIO_Pin_2, GPIO_Mode_Output_PP);
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}
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int main(void)
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{
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uint8_t i;
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SYS_SetClock();
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// UART1 configuration: baud 115200 with Timer2, 1T mode, no interrupt
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UART1_Config8bitUart(UART1_BaudSource_Timer2, HAL_State_ON, 115200);
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GPIO_Init();
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I2C_Init();
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RX8025T_Init();
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time[0] = 0x10; // second
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time[1] = 0x10; // minute
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time[2] = 0x10; // hour
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time[3] = 0x40; // week day
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time[4] = 0x16; // day
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time[5] = 0x07; // month
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time[6] = 0x22; // year
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RX8025T_SetTime(time);
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while(1)
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{
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RX8025T_GetTime(time);
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for (i = 0; i < BUFF_SIZE; i++)
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{
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UART1_TxHex(time[i]);
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UART1_TxChar('-');
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}
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UART1_TxString("\r\n");
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SYS_Delay(1000);
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}
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}
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