ntc.h

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00001 
00043 #ifndef DRV_NTC_H
00044 #define DRV_NTC_H
00045 
00046 #include "hw/ntc_map.h"
00047 
00048 #include <cfg/compiler.h>
00049 #include <cfg/debug.h>
00050 
00051 #define NTC_OPEN_CIRCUIT  -32768
00052 #define NTC_SHORT_CIRCUIT 32767
00053 
00054 typedef int16_t  deg_t; 
00057 #define DEG_TO_DEG_T(x)         ((deg_t)((x) * 10))
00058 
00060 #define DEG_T_TO_INTDEG(x)      ((x) / 10)
00061 
00063 #define DEG_T_TO_DECIMALDEG(x)  ((x) % 10)
00064 
00066 #define DEG_T_TO_FLOATDEG(x)    ((x) / 10.0)
00067 
00068 
00069 typedef uint32_t res_t; 
00070 typedef float    amp_t; 
00072 DB(extern bool ntc_initialized;)
00073 
00074 
00076 typedef struct NtcHwInfo
00077 {
00078     const res_t *resistances; 
00079     size_t num_resistances;   
00080     deg_t degrees_min;        
00081     deg_t degrees_step;       
00082 } NtcHwInfo;
00083 
00085 void ntc_init(void);
00086 
00088 deg_t ntc_read(NtcDev dev);
00089 
00090 #endif /* DRV_NTC_H */