adc.h

00001 /*
00002  * adc.h
00003  *
00004  *  Created on: 02/07/2011
00005  *      Author: francisco
00006  */
00007 
00008 #ifndef ADC_H_
00009 #define ADC_H_
00010 
00011 
00012 #define PCADC   (1U<<12)
00013 
00014 #define ADC_CCLK_4      0U
00015 #define ADC_CCLK        1U
00016 #define ADC_CCLK_2      2U
00017 #define ADC_CCLK_8      3U
00018 
00019 #define PCLK_ADC        24U
00020 
00021 #define     ADC_CH_0                        (1U<<0)
00022 #define     ADC_CH_1                        (1U<<1)
00023 #define     ADC_CH_2                        (1U<<2)
00024 #define     ADC_CH_3                        (1U<<3)
00025 #define     ADC_CH_4                        (1U<<4)
00026 #define     ADC_CH_5                        (1U<<5)
00027 #define     ADC_CH_6                        (1U<<6)
00028 #define     ADC_CH_7                        (1U<<7)
00029 #define     ADC_CLKDIV(val)                 ((val)<<8)
00030 #define     ADC_MODE_BURST                  (1U<<16)
00031 #define     ADC_OPERATIONAL                 (1U<< 21)
00032 #define     ADC_NO_START                    ~(7U<<24)
00033 #define     ADC_START_NOW                   (1U<<24)
00034 #define     ADC_START_ON_PIO2_10            (2U<<24)
00035 #define     ADC_START_ON_PIO1_27            (3U<<24)
00036 #define     ADC_START_ON_MAT0_1             (4U<<24)
00037 #define     ADC_START_ON_MAT0_3             (5U<<24)
00038 #define     ADC_START_ON_MAT1_0             (6U<<24)
00039 #define     ADC_START_ON_MAT1_1             (7U<<24)
00040 #define     ADC_EDGE_FALLING                (1U<<27)
00041 #define     ADC_EDGE_RAISING                ~(1U<<27)
00042 
00043 #define     ADC_GLOBAL_INT                  (1U<<8)
00044 #define     ADC_INT_CH_0                    (1U<<0)
00045 #define     ADC_INT_CH_1                    (1U<<1)
00046 #define     ADC_INT_CH_2                    (1U<<2)
00047 #define     ADC_INT_CH_3                    (1U<<3)
00048 #define     ADC_INT_CH_4                    (1U<<4)
00049 #define     ADC_INT_CH_5                    (1U<<5)
00050 #define     ADC_INT_CH_6                    (1U<<6)
00051 #define     ADC_INT_CH_7                    (1U<<7)
00052 
00053 #define     ADC_LAST_CONVERSION()           ((LPC_ADC->ADGDR&(0xFFFU<<4))>>4)
00054 #define     ADC_LAST_CONVERSION_CHANNEL()   ((LPC_ADC->ADGDR&(7U<<24))>>24)
00055 #define     ADC_LAST_CONVERSION_DONE()      (LPC_ADC->ADGDR&(1U<<31))
00056 #define     ADC_LAST_CONVERSION_OVERUN()    (LPC_ADC->ADGDR&(1U<<30))
00057 #define     ADC_CONVERSION_CH(ch)           ((LPC_ADC->ADDR[ch]&(0xFFFU<<4))>>4)
00058 #define     ADC_CONVERSION_DONE_CH(ch)      (LPC_ADC->ADDR[ch]&(1U<<31))
00059 #define     ADC_CONVERSION_OVERUN_CH(ch)    (LPC_ADC->ADDR[ch]&(1U<<30))
00060 
00061 #define     ADC_CONVERT(val)                ((val&(0xFFFU<<4))>>4)
00062 #define     ADC_CHANNEL(val)                ((val&(7U<<24))>>24)
00063 
00064 #ifdef __cplusplus
00065 extern "C" {
00066 #endif
00067 
00068 extern void init_adc(int adc_clk);
00069 extern void setup_start(int mode,int edge);
00070 extern void select_channels(int adc_ch);
00071 
00072 #ifdef __cplusplus
00073 }
00074 #endif
00075 
00076 #endif /* ADC_H_ */