Mercurial > hp34970-firmware / file comparison
comparison: src/hp34comm.h
src/hp34comm.h
- changeset 5
- f1c85c2500f2
- child 8
- 55021f3f1929
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| 4:219766126afb | 5:f1c85c2500f2 |
|---|---|
| 1 #ifndef HP34COMM_H | |
| 2 #define HP34COMM_H | |
| 3 | |
| 4 #include "mbed.h" | |
| 5 #include "CircularBuffer.h" | |
| 6 | |
| 7 /***** HP 34970A communication class ***/ | |
| 8 | |
| 9 #define MAX_ERRS 10 | |
| 10 #define MAX_BUFF 32 | |
| 11 #define BUF_SIZE 32 | |
| 12 | |
| 13 class HPSerial { | |
| 14 | |
| 15 public: | |
| 16 enum TrState { | |
| 17 Idle = 0, | |
| 18 Tx, | |
| 19 Rx, | |
| 20 }; | |
| 21 typedef struct _CMD | |
| 22 { | |
| 23 TrState direction; | |
| 24 uint8_t cmd; | |
| 25 uint8_t size; | |
| 26 char value[MAX_BUFF+1]; | |
| 27 unsigned long id; | |
| 28 } CMD; | |
| 29 | |
| 30 | |
| 31 | |
| 32 HPSerial(); | |
| 33 | |
| 34 bool cmd_available(void); | |
| 35 bool pop(CMD& cmd); | |
| 36 bool cmd_buf_full(void); | |
| 37 unsigned int nerrors(uint8_t errorno); | |
| 38 | |
| 39 | |
| 40 private: | |
| 41 void reset(uint8_t errorno=0xFF); | |
| 42 void handleAck(uint8_t val); | |
| 43 void pushCmd(TrState direction, uint8_t cmd, uint8_t size, char *payload); | |
| 44 void handleChar(uint8_t val); | |
| 45 void setstatedbg(void); | |
| 46 void rxIrq(void); | |
| 47 void txIrq(void); | |
| 48 void timeout(void); | |
| 49 | |
| 50 private: | |
| 51 RawSerial serial_tx; | |
| 52 RawSerial serial_rx; | |
| 53 uint8_t buf[BUF_SIZE]; | |
| 54 uint8_t head; | |
| 55 uint8_t tx_state; | |
| 56 uint8_t tx_cmd; | |
| 57 uint8_t tx_len; | |
| 58 bool tx_ack; | |
| 59 CircularBuffer<CMD, 32> cmdbuf; | |
| 60 unsigned long ncmd; | |
| 61 unsigned int errs[MAX_ERRS]; | |
| 62 Ticker timeouter; | |
| 63 }; | |
| 64 | |
| 65 #endif |
