72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
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// 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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#include "fw_hal.h"
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__BIT dir = SET;
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uint8_t dc = 0;
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void main(void)
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{
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SYS_SetClock();
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// UART1, baud 115200, baud source Timer1, 1T mode, no interrupt
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UART1_ConfigMode1Dyn8bitUart(UART1_BaudSource_Timer1, HAL_State_ON, 115200);
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// Set GPIO pin mode
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GPIO_P3_SetMode(GPIO_Pin_2|GPIO_Pin_3, GPIO_Mode_Output_PP);
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// Stop PCA/PWM
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PCA_SetCounterState(HAL_State_OFF);
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// Stop counter in idle mode
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PCA_SetStopCounterInIdle(HAL_State_ON);
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// Use SYSCLK as clock source
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PCA_SetClockSource(PCA_ClockSource_SysClk);
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// Turn off overflow interrupt
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PCA_EnableCounterOverflowInterrupt(HAL_State_OFF);
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// Set PCA0 and PCA1 to PWM mode
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PCA_PCA0_SetWorkMode(PCA_WorkMode_PWM_NonInterrupt);
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PCA_PCA1_SetWorkMode(PCA_WorkMode_PWM_NonInterrupt);
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// Set both to 8-bit PWM
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PCA_PWM0_SetBitWidth(PCA_PWM_BitWidth_8);
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PCA_PWM1_SetBitWidth(PCA_PWM_BitWidth_8);
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// Set initial duty cycle
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PCA_PCA0_SetCompareValue(dc);
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PCA_PCA1_SetCompareValue(~dc);
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// Set output port for STC8G1K08A, PWM0:P32, PWM1:P33
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PCA_SetPort(PCA_AlterPort_G1K08A_P55_P32_P33_P54);
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// Start PWM
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PCA_SetCounterState(HAL_State_ON);
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while(1)
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{
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PCA_PCA0_ChangeCompareValue(dc);
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PCA_PCA1_ChangeCompareValue(~dc);
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UART1_TxHex(dc);
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UART1_TxChar(' ');
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UART1_TxHex(~dc);
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if (dir)
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{
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dc++;
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if (dc == 0xFF) dir = !dir;
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}
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else
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{
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dc--;
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if (dc == 0) dir = !dir;
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}
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UART1_TxString("\r\n");
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SYS_Delay(10);
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}
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}
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