Mercurial > hp34970-firmware / file comparison
comparison: src/hp34comm.h
src/hp34comm.h
- changeset 18
- 4fd621551d55
- parent 10
- 01515349b30e
- child 19
- a52d60613cf7
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replaced
| 17:162fe523c37d | 18:4fd621551d55 |
|---|---|
| 8 | 8 |
| 9 #define MAX_ERRS 10 | 9 #define MAX_ERRS 10 |
| 10 #define MAX_BUFF 16 | 10 #define MAX_BUFF 16 |
| 11 #define BUF_SIZE 16 | 11 #define BUF_SIZE 16 |
| 12 | 12 |
| 13 | |
| 14 | |
| 13 class HPSerial { | 15 class HPSerial { |
| 14 | 16 |
| 15 public: | 17 public: |
| 16 enum TrState { | |
| 17 Idle = 0, | |
| 18 Tx, | |
| 19 Rx, | |
| 20 }; | |
| 21 typedef struct _CMD | 18 typedef struct _CMD |
| 22 { | 19 { |
| 23 TrState direction; | |
| 24 uint8_t cmd; | 20 uint8_t cmd; |
| 25 uint8_t size; | 21 uint8_t size; |
| 26 char value[MAX_BUFF+1]; | 22 char value[MAX_BUFF+1]; |
| 27 unsigned long id; | 23 unsigned long id; |
| 28 } CMD; | 24 } CMD; |
| 29 | 25 |
| 30 | 26 |
| 31 | 27 |
| 32 HPSerial(PinName rx); | 28 HPSerial(PinName tx, PinName rx); |
| 33 | 29 |
| 34 bool cmd_available(void); | 30 bool cmd_available(void); |
| 35 bool pop(CMD& cmd); | 31 bool pop(CMD& cmd); |
| 36 bool cmd_buf_full(void); | 32 bool cmd_buf_full(void); |
| 37 unsigned int nerrors(uint8_t errorno); | 33 unsigned int nerrors(uint8_t errorno); |
| 38 | 34 |
| 39 | 35 |
| 40 private: | 36 private: |
| 41 void reset(uint8_t errorno=0xFF); | 37 void pushCmd(uint8_t cmd, uint8_t size, char *payload); |
| 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); | 38 void rxIrq(void); |
| 47 void timeout(void); | 39 void timeout(void); |
| 48 | 40 |
| 49 private: | 41 private: |
| 50 RawSerial serial_rx; | 42 RawSerial serial; |
| 51 uint8_t buf[BUF_SIZE]; | 43 uint8_t buf[BUF_SIZE]; |
| 52 uint8_t head; | 44 uint8_t head; |
| 53 uint8_t tx_state; | |
| 54 uint8_t tx_cmd; | |
| 55 uint8_t tx_len; | |
| 56 bool tx_ack; | |
| 57 CircularBuffer<CMD, 32> cmdbuf; | 45 CircularBuffer<CMD, 32> cmdbuf; |
| 58 unsigned long ncmd; | 46 unsigned long ncmd; |
| 59 unsigned int errs[MAX_ERRS]; | 47 unsigned int errs[MAX_ERRS]; |
| 60 Ticker timeouter; | 48 Ticker timeouter; |
| 49 | |
| 50 // state machine stuff | |
| 51 typedef enum {STATE_IDLE, | |
| 52 STATE_HANDCHEKED, | |
| 53 STATE_COMMAND, | |
| 54 STATE_PAYLOAD_SIZE, | |
| 55 STATE_PAYLOAD, | |
| 56 NUM_STATES} state_t; | |
| 57 | |
| 58 | |
| 59 typedef struct instance_data { | |
| 60 uint8_t cmd; | |
| 61 uint8_t size; | |
| 62 uint8_t received; | |
| 63 char payload[MAX_BUFF]; | |
| 64 } instance_data_t; | |
| 65 | |
| 66 state_t do_state_initial(instance_data_t *data, uint8_t c); | |
| 67 state_t do_state_handcheck(instance_data_t *data, uint8_t c); | |
| 68 state_t do_state_command(instance_data_t *data, uint8_t c); | |
| 69 state_t do_state_payload_size(instance_data_t *data, uint8_t c); | |
| 70 state_t do_state_payload(instance_data_t *data, uint8_t c); | |
| 71 | |
| 72 void send_ack(uint8_t c); | |
| 73 | |
| 74 // pointer to "state method" (ie. one of the just above) | |
| 75 typedef state_t(HPSerial::*statemethod)(instance_data_t *data, uint8_t c); | |
| 76 statemethod const state_table[NUM_STATES] = { | |
| 77 &HPSerial::do_state_initial, | |
| 78 &HPSerial::do_state_handcheck, | |
| 79 &HPSerial::do_state_command, | |
| 80 &HPSerial::do_state_payload_size, | |
| 81 &HPSerial::do_state_payload, | |
| 82 }; | |
| 83 | |
| 84 state_t run_state(state_t cur_state, instance_data_t *data, uint8_t c); | |
| 85 | |
| 86 state_t cur_state; | |
| 87 instance_data rx_data; | |
| 61 }; | 88 }; |
| 62 | 89 |
| 63 #endif | 90 #endif |
