71 lines
3.1 KiB
C
71 lines
3.1 KiB
C
/******************************************************************************************************************************************
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* 文件名称: SWM341_dac.c
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* 功能说明: SWM341单片机的DAC模块驱动库
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* 技术支持: http://www.synwit.com.cn/e/tool/gbook/?bid=1
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* 注意事项:
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* 版本日期: V1.1.0 2017年10月25日
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* 升级记录:
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*
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*
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*******************************************************************************************************************************************
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* @attention
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*
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* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS WITH CODING INFORMATION
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* REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. AS A RESULT, SYNWIT SHALL NOT BE HELD LIABLE
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* FOR ANY DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE CONTENT
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* OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING INFORMATION CONTAINED HEREIN IN CONN-
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* -ECTION WITH THEIR PRODUCTS.
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*
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* COPYRIGHT 2012 Synwit Technology
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*******************************************************************************************************************************************/
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#include "SWM341.h"
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#include "SWM341_dac.h"
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/******************************************************************************************************************************************
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* 函数名称: DAC_Init()
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* 功能说明: DAC 初始化
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* 输 入: DAC_TypeDef * DACx 指定要被设置的DAC接口，有效值包括DAC
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* uint32_t format 数据格式，可取值DAC_FORMAT_LSB12B、DAC_FORMAT_MSB12B、DAC_FORMAT_8B
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* 输 出: 无
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* 注意事项: 无
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******************************************************************************************************************************************/
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void DAC_Init(DAC_TypeDef * DACx, uint32_t format)
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{
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switch((uint32_t)DACx)
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{
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case ((uint32_t)DAC):
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SYS->CLKEN1 |= (0x01 << SYS_CLKEN1_DAC_Pos);
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break;
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}
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SYS->DACCR &= ~SYS_DACCR_VRADJ_Msk;
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SYS->DACCR |= ((SYS->BACKUP[2] & 0x1F) << SYS_DACCR_VRADJ_Pos);
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DACx->CR = (format << DAC_CR_DHRFMT_Pos);
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}
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/******************************************************************************************************************************************
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* 函数名称: DAC_Open()
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* 功能说明: DAC 开启
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* 输 入: DAC_TypeDef * DACx 指定要被设置的DAC接口，有效值包括DAC
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* 输 出: 无
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* 注意事项: 无
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******************************************************************************************************************************************/
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void DAC_Open(DAC_TypeDef * DACx)
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{
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DACx->CR |= (1 << DAC_CR_EN_Pos);
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}
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/******************************************************************************************************************************************
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* 函数名称: DAC_Close()
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* 功能说明: DAC 关闭
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* 输 入: DAC_TypeDef * DACx 指定要被设置的DAC接口，有效值包括DAC
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* 输 出: 无
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* 注意事项: 无
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******************************************************************************************************************************************/
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void DAC_Close(DAC_TypeDef * DACx)
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{
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DACx->CR &= ~DAC_CR_EN_Msk;
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}
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