LPC1700CMSIS Standard Peripheral Firmware Library: C:/nxpdrv/LPC1700CMSIS/Drivers/source/lpc17xx_dac.c Source File

LPC1700CMSIS

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C:/nxpdrv/LPC1700CMSIS/Drivers/source/lpc17xx_dac.c

00001 
00020 /* Peripheral group ----------------------------------------------------------- */
00025 /* Includes ------------------------------------------------------------------- */
00026 #include "lpc17xx_dac.h"
00027 #include "lpc17xx_clkpwr.h"
00028 
00029 /* If this source file built with example, the LPC17xx FW library configuration
00030  * file in each example directory ("lpc17xx_libcfg.h") must be included,
00031  * otherwise the default FW library configuration file must be included instead
00032  */
00033 #ifdef __BUILD_WITH_EXAMPLE__
00034 #include "lpc17xx_libcfg.h"
00035 #else
00036 #include "lpc17xx_libcfg_default.h"
00037 #endif /* __BUILD_WITH_EXAMPLE__ */
00038 
00039 
00040 #ifdef _DAC
00041 
00042 /* Public Functions ----------------------------------------------------------- */
00047 /*********************************************************************/
00054 void    DAC_Init(LPC_DAC_TypeDef *DACx)
00055 {
00056         CHECK_PARAM(PARAM_DACx(DACx));
00057         /* Set default clock divider for DAC */
00058         // CLKPWR_SetPCLKDiv (CLKPWR_PCLKSEL_DAC, CLKPWR_PCLKSEL_CCLK_DIV_4);
00059         //Set maximum current output
00060         DAC_SetBias(LPC_DAC,DAC_MAX_CURRENT_700uA);
00061 
00062 
00063 }
00064 
00065 /*********************************************************************/
00071 void    DAC_UpdateValue (LPC_DAC_TypeDef *DACx,uint32_t dac_value)
00072 {
00073         uint32_t tmp;
00074         CHECK_PARAM(PARAM_DACx(DACx));
00075         tmp = DACx->DACR & DAC_BIAS_EN;
00076         tmp |= DAC_VALUE(dac_value);
00077         //DACx->DACR    &= ~DAC_VALUE(0x3FF);
00078         //DACx->DACR    |=  DAC_VALUE(dac_value);
00079         // Update value
00080         DACx->DACR = tmp;
00081 }
00082 
00083 /*********************************************************************/
00090 void    DAC_SetBias (LPC_DAC_TypeDef *DACx,uint32_t bias)
00091 {
00092         CHECK_PARAM(PARAM_DAC_CURRENT_OPT(bias));
00093         DACx->DACR &=~DAC_BIAS_EN;
00094         if (bias  == DAC_MAX_CURRENT_350uA)
00095         {
00096                 DACx->DACR |= DAC_BIAS_EN;
00097         }
00098 }
00099 /*********************************************************************/
00108 void    DAC_ConfigDAConverterControl (LPC_DAC_TypeDef *DACx,DAC_CONVERTER_CFG_Type *DAC_ConverterConfigStruct)
00109 {
00110         CHECK_PARAM(PARAM_DACx(DACx));
00111         DACx->DACCTRL &= ~DAC_DACCTRL_MASK;
00112         if (DAC_ConverterConfigStruct->DBLBUF_ENA)
00113                 DACx->DACCTRL   |= DAC_DBLBUF_ENA;
00114         if (DAC_ConverterConfigStruct->CNT_ENA)
00115                 DACx->DACCTRL   |= DAC_CNT_ENA;
00116         if (DAC_ConverterConfigStruct->DMA_ENA)
00117                 DACx->DACCTRL   |= DAC_DMA_ENA;
00118 }
00119 /*********************************************************************/
00125 void    DAC_SetDMATimeOut(LPC_DAC_TypeDef *DACx, uint32_t time_out)
00126 {
00127         CHECK_PARAM(PARAM_DACx(DACx));
00128         DACx->DACCNTVAL = DAC_CCNT_VALUE(time_out);
00129 }
00130 
00135 #endif /* _DAC */
00136 
00141 /* --------------------------------- End Of File ------------------------------ */
Generated on Mon Feb 8 10:01:37 2010 for LPC1700CMSIS Standard Peripheral Firmware Library by
1.5.9
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