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lpc17xx_dac.c
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1 
20 /* Peripheral group ----------------------------------------------------------- */
25 /* Includes ------------------------------------------------------------------- */
26 #include "lpc17xx_dac.h"
27 #include "lpc17xx_clkpwr.h"
28 
29 /* If this source file built with example, the LPC17xx FW library configuration
30  * file in each example directory ("lpc17xx_libcfg.h") must be included,
31  * otherwise the default FW library configuration file must be included instead
32  */
33 #ifdef __BUILD_WITH_EXAMPLE__
34 #include "lpc17xx_libcfg.h"
35 #else
36 #include "lpc17xx_libcfg_default.h"
37 #endif /* __BUILD_WITH_EXAMPLE__ */
38 
39 
40 #ifdef _DAC
41 
42 /* Public Functions ----------------------------------------------------------- */
47 /*********************************************************************/
54 void DAC_Init(LPC_DAC_TypeDef *DACx)
55 {
56  CHECK_PARAM(PARAM_DACx(DACx));
57  /* Set default clock divider for DAC */
58  // CLKPWR_SetPCLKDiv (CLKPWR_PCLKSEL_DAC, CLKPWR_PCLKSEL_CCLK_DIV_4);
59  //Set maximum current output
60  DAC_SetBias(LPC_DAC,DAC_MAX_CURRENT_700uA);
61 }
62 
63 /*********************************************************************/
69 void DAC_UpdateValue (LPC_DAC_TypeDef *DACx,uint32_t dac_value)
70 {
71  uint32_t tmp;
72  CHECK_PARAM(PARAM_DACx(DACx));
73  tmp = DACx->DACR & DAC_BIAS_EN;
74  tmp |= DAC_VALUE(dac_value);
75  // Update value
76  DACx->DACR = tmp;
77 }
78 
79 /*********************************************************************/
86 void DAC_SetBias (LPC_DAC_TypeDef *DACx,uint32_t bias)
87 {
88  CHECK_PARAM(PARAM_DAC_CURRENT_OPT(bias));
89  DACx->DACR &=~DAC_BIAS_EN;
90  if (bias == DAC_MAX_CURRENT_350uA)
91  {
92  DACx->DACR |= DAC_BIAS_EN;
93  }
94 }
95 
96 /*********************************************************************/
105 void DAC_ConfigDAConverterControl (LPC_DAC_TypeDef *DACx,DAC_CONVERTER_CFG_Type *DAC_ConverterConfigStruct)
106 {
107  CHECK_PARAM(PARAM_DACx(DACx));
108  DACx->DACCTRL &= ~DAC_DACCTRL_MASK;
109  if (DAC_ConverterConfigStruct->DBLBUF_ENA)
110  DACx->DACCTRL |= DAC_DBLBUF_ENA;
111  if (DAC_ConverterConfigStruct->CNT_ENA)
112  DACx->DACCTRL |= DAC_CNT_ENA;
113  if (DAC_ConverterConfigStruct->DMA_ENA)
114  DACx->DACCTRL |= DAC_DMA_ENA;
115 }
116 
117 /*********************************************************************/
123 void DAC_SetDMATimeOut(LPC_DAC_TypeDef *DACx, uint32_t time_out)
124 {
125  CHECK_PARAM(PARAM_DACx(DACx));
126  DACx->DACCNTVAL = DAC_CCNT_VALUE(time_out);
127 }
128 
133 #endif /* _DAC */
134 
139 /* --------------------------------- End Of File ------------------------------ */