本帖最后由 ddllxxrr 于 2015-1-10 13:58 编辑
今天接着用SAMD21开发板跑程序哈！
这次，不接上次程序，另起炉灶。
首先新建ASF工程，在工程里选择SAMD21，（关于为什么选开发板的好处参见前几个贴子）:
然后打开，ASF wizard 把DAC模块加进来。
再打开右边的ASF EXPLORER
接着打开里边的Quictk Strat
按照里边的步骤组织好程序。然后编译。
编译通过。
那么在哪个脚输出呢。这也好办，数据手册，关于DAC的就是一个脚：
好了，运行结果，我手机没带等带了再传一下：
先上程序先：
/**
* \file
*
* \brief Empty user application template
*
*/
/**
* \mainpage User Application template doxygen documentation
*
* \par Empty user application template
*
* This is a bare minimum user application template.
*
* For documentation of the board, go \ref group_common_boards "here" for a link
* to the board-specific documentation.
*
* \par Content
*
* -# Include the ASF header files (through asf.h)
* -# Minimal main function that starts with a call to system_init()
* -# Basic usage of on-board LED and button
* -# "Insert application code here" comment
*
*/
/*
* Include header files for all drivers that have been imported from
* Atmel Software Framework (ASF).
*/
#include <asf.h>
void configure_dac(void);
void configure_dac_channel(void);
struct dac_module dac_instance;
void configure_dac(void)
{
struct dac_config config_dac;
dac_get_config_defaults(&config_dac);
dac_init(&dac_instance, DAC, &config_dac);
dac_enable(&dac_instance);
}
void configure_dac_channel(void)
{
struct dac_chan_config config_dac_chan;
dac_chan_get_config_defaults(&config_dac_chan);
dac_chan_set_config(&dac_instance, DAC_CHANNEL_0, &config_dac_chan);
dac_chan_enable(&dac_instance, DAC_CHANNEL_0);
}
int main (void)
{
system_init();
configure_dac();
configure_dac_channel();
uint16_t i = 0;
while (1) {
dac_chan_write(&dac_instance, DAC_CHANNEL_0, i);
if (++i == 0x3FF) {
i = 0;
}
}
}
好了，先写到这里!!!
| 
楼主
标题置顶
标题高亮
