caowencai
46500e86d7
LCD_relay_init
|
7 ヶ月 前 | |
|---|---|---|
| .. | ||
| gd32f30x_it.c | 7 ヶ月 前 | |
| gd32f30x_it.h | 7 ヶ月 前 | |
| gd32f30x_libopt.h | 7 ヶ月 前 | |
| main.c | 7 ヶ月 前 | |
| readme.txt | 7 ヶ月 前 | |
| systick.c | 7 ヶ月 前 | |
| systick.h | 7 ヶ月 前 | |
readme.txt
/*!
\file readme.txt
\brief description of the TIMER2 PWM input capture demo for gd32f30x
\version 2017-02-10, V1.0.0, firmware for GD32F30x
\version 2018-10-10, V1.1.0, firmware for GD32F30x
\version 2018-12-25, V2.0.0, firmware for GD32F30x
\version 2020-09-30, V2.1.0, firmware for GD32F30x
*/
/*
Copyright (c) 2020, GigaDevice Semiconductor Inc.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors
may be used to endorse or promote products derived from this software without
specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF SUCH DAMAGE.
*/
This demo is based on the GD32307C-EVAL-V1.1 board, it shows how to use the TIMER
peripheral to measure the frequency and duty cycle of an external signal.
The TIMxCLK frequency is set to systemcoreclock, the prescaler is 120 so the
TIMER2 counter clock is 1MHz.
The external signal is connected to TIMER2 CH0 pin (PA6).
The rising edge is used as active edge.
The TIMER2 CH0CV is used to compute the frequency value.
The TIMER2 CH1CV is used to compute the duty cycle value.
The available frequence of the input signal is ranging from 16Hz to 20KHz.
You can use USART to watch the frequency and duty cycle of the input signal.
The USART is configured as follow:
- BaudRate = 115200 baud
- Word Length = 8 Bits
- One Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals)
- Receive and transmit enabled
\file readme.txt
\brief description of the TIMER2 PWM input capture demo for gd32f30x
\version 2017-02-10, V1.0.0, firmware for GD32F30x
\version 2018-10-10, V1.1.0, firmware for GD32F30x
\version 2018-12-25, V2.0.0, firmware for GD32F30x
\version 2020-09-30, V2.1.0, firmware for GD32F30x
*/
/*
Copyright (c) 2020, GigaDevice Semiconductor Inc.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors
may be used to endorse or promote products derived from this software without
specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
OF SUCH DAMAGE.
*/
This demo is based on the GD32307C-EVAL-V1.1 board, it shows how to use the TIMER
peripheral to measure the frequency and duty cycle of an external signal.
The TIMxCLK frequency is set to systemcoreclock, the prescaler is 120 so the
TIMER2 counter clock is 1MHz.
The external signal is connected to TIMER2 CH0 pin (PA6).
The rising edge is used as active edge.
The TIMER2 CH0CV is used to compute the frequency value.
The TIMER2 CH1CV is used to compute the duty cycle value.
The available frequence of the input signal is ranging from 16Hz to 20KHz.
You can use USART to watch the frequency and duty cycle of the input signal.
The USART is configured as follow:
- BaudRate = 115200 baud
- Word Length = 8 Bits
- One Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals)
- Receive and transmit enabled