Mbed 4dGenie class
Dependents: Genie_Test 039847382-S3_DS1621_and_LCD_V1
This is a work in progress.
4dGenie class to use with 4dLCD screens that are using the genie environment.
There are still some rare occasions where the 4dLCD might crash, for now i have no solution to this except doing a reset of the 4dLCD.
Please make sure to have the most up to date PmmC loaded on the screen.
usage example :
Mbed4dGenie test program
#include "mbed.h" #include "mbed_genie.h" DigitalOut myled(LED1); /* The Mbed4dGenie class requires 3 parameters 1 - Tx pin 2 - Rx pin 3 - Reset pin */ Mbed4dGenie lcd4d(PTE0,PTE1,PTB9); int main() { int temp = 0; printf("Mbed Genie demo \n\r"); lcd4d.Start(); /* for example, in this loop we increment the thermometer0 object from 0 to 100 */ while(1) { if(temp >= 100) { temp = -1; } else { temp++; } lcd4d.genieWriteObject(GENIE_OBJ_LED_DIGITS,1,temp); myled = 1; wait(0.05); myled = 0; wait(0.05); } }
mbed_genie.cpp@1:95e0e194a412, 2014-02-21 (annotated)
- Committer:
- chris215
- Date:
- Fri Feb 21 02:47:32 2014 +0000
- Revision:
- 1:95e0e194a412
- Parent:
- 0:d2ed5a44c802
- Child:
- 2:f283764fe9b7
fixed some warnings
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
chris215 | 0:d2ed5a44c802 | 1 | |
chris215 | 0:d2ed5a44c802 | 2 | #include "mbed.h" |
chris215 | 0:d2ed5a44c802 | 3 | #include "mbed_genie.h" |
chris215 | 0:d2ed5a44c802 | 4 | |
chris215 | 0:d2ed5a44c802 | 5 | Serial screen(p9,p10); |
chris215 | 0:d2ed5a44c802 | 6 | Serial pc(USBTX,USBRX); |
chris215 | 0:d2ed5a44c802 | 7 | Timer t; |
chris215 | 0:d2ed5a44c802 | 8 | |
chris215 | 0:d2ed5a44c802 | 9 | |
chris215 | 0:d2ed5a44c802 | 10 | |
chris215 | 0:d2ed5a44c802 | 11 | void _genieFlushEventQueue (void); |
chris215 | 0:d2ed5a44c802 | 12 | void _handleError (void); |
chris215 | 0:d2ed5a44c802 | 13 | void _geniePutchar (uint8_t c); |
chris215 | 0:d2ed5a44c802 | 14 | uint8_t _genieGetchar (void); |
chris215 | 0:d2ed5a44c802 | 15 | void _genieSetLinkState (uint16_t newstate); |
chris215 | 0:d2ed5a44c802 | 16 | uint16_t _genieGetLinkState (void); |
chris215 | 0:d2ed5a44c802 | 17 | bool _genieEnqueueEvent (uint8_t * data); |
chris215 | 0:d2ed5a44c802 | 18 | ////////////////////////////////////////////////////////////// |
chris215 | 0:d2ed5a44c802 | 19 | // A structure to hold up to MAX_GENIE_EVENTS events receive |
chris215 | 0:d2ed5a44c802 | 20 | // from the display |
chris215 | 0:d2ed5a44c802 | 21 | // |
chris215 | 0:d2ed5a44c802 | 22 | static genieEventQueueStruct _genieEventQueue; |
chris215 | 0:d2ed5a44c802 | 23 | |
chris215 | 0:d2ed5a44c802 | 24 | ////////////////////////////////////////////////////////////// |
chris215 | 0:d2ed5a44c802 | 25 | // Pointer to the user's event handler function |
chris215 | 0:d2ed5a44c802 | 26 | // |
chris215 | 0:d2ed5a44c802 | 27 | static genieUserEventHandlerPtr _genieUserHandler = NULL; |
chris215 | 0:d2ed5a44c802 | 28 | |
chris215 | 0:d2ed5a44c802 | 29 | |
chris215 | 0:d2ed5a44c802 | 30 | ////////////////////////////////////////////////////////////// |
chris215 | 0:d2ed5a44c802 | 31 | // Simple 5-deep stack for the link state, this allows |
chris215 | 0:d2ed5a44c802 | 32 | // genieDoEvents() to save the current state, receive a frame, |
chris215 | 0:d2ed5a44c802 | 33 | // then restore the state |
chris215 | 0:d2ed5a44c802 | 34 | // |
chris215 | 0:d2ed5a44c802 | 35 | static uint8_t _genieLinkStates[5] = {GENIE_LINK_IDLE}; |
chris215 | 0:d2ed5a44c802 | 36 | // |
chris215 | 0:d2ed5a44c802 | 37 | // Stack pointer |
chris215 | 0:d2ed5a44c802 | 38 | // |
chris215 | 0:d2ed5a44c802 | 39 | static uint8_t *_genieLinkState = &_genieLinkStates[0]; |
chris215 | 0:d2ed5a44c802 | 40 | |
chris215 | 0:d2ed5a44c802 | 41 | |
chris215 | 0:d2ed5a44c802 | 42 | ////////////////////////////////////////////////////////////// |
chris215 | 0:d2ed5a44c802 | 43 | // Number of mS the genieGetChar() function will wait before |
chris215 | 0:d2ed5a44c802 | 44 | // giving up on the display |
chris215 | 0:d2ed5a44c802 | 45 | static int _genieTimeout = TIMEOUT_PERIOD; |
chris215 | 0:d2ed5a44c802 | 46 | |
chris215 | 0:d2ed5a44c802 | 47 | |
chris215 | 0:d2ed5a44c802 | 48 | ////////////////////////////////////////////////////////////// |
chris215 | 0:d2ed5a44c802 | 49 | // Number of times we have had a timeout |
chris215 | 1:95e0e194a412 | 50 | //static int _genieTimeouts = 0; |
chris215 | 0:d2ed5a44c802 | 51 | |
chris215 | 0:d2ed5a44c802 | 52 | |
chris215 | 0:d2ed5a44c802 | 53 | ////////////////////////////////////////////////////////////// |
chris215 | 0:d2ed5a44c802 | 54 | // Global error variable |
chris215 | 0:d2ed5a44c802 | 55 | static int _genieError = ERROR_NONE; |
chris215 | 0:d2ed5a44c802 | 56 | |
chris215 | 0:d2ed5a44c802 | 57 | |
chris215 | 0:d2ed5a44c802 | 58 | |
chris215 | 0:d2ed5a44c802 | 59 | |
chris215 | 0:d2ed5a44c802 | 60 | static uint8_t rxframe_count = 0; |
chris215 | 0:d2ed5a44c802 | 61 | |
chris215 | 0:d2ed5a44c802 | 62 | |
chris215 | 0:d2ed5a44c802 | 63 | ////////////////////////////////////////////////////////////// |
chris215 | 0:d2ed5a44c802 | 64 | // Number of fatal errors encountered |
chris215 | 1:95e0e194a412 | 65 | //static int _genieFatalErrors = 0; |
chris215 | 0:d2ed5a44c802 | 66 | ////////////////////// genieGetEventData //////////////////////// |
chris215 | 0:d2ed5a44c802 | 67 | // |
chris215 | 0:d2ed5a44c802 | 68 | // Returns the LSB and MSB of the event's data combined into |
chris215 | 0:d2ed5a44c802 | 69 | // a single uint16 |
chris215 | 0:d2ed5a44c802 | 70 | // |
chris215 | 0:d2ed5a44c802 | 71 | // The data is transmitted from the display in big-endian format |
chris215 | 0:d2ed5a44c802 | 72 | // and stored the same so the user can't just access it as an int |
chris215 | 0:d2ed5a44c802 | 73 | // directly from the structure. |
chris215 | 0:d2ed5a44c802 | 74 | // |
chris215 | 0:d2ed5a44c802 | 75 | uint16_t genieGetEventData (genieFrame * e) { |
chris215 | 0:d2ed5a44c802 | 76 | return (e->reportObject.data_msb << 8) + e->reportObject.data_lsb; |
chris215 | 0:d2ed5a44c802 | 77 | } |
chris215 | 0:d2ed5a44c802 | 78 | |
chris215 | 0:d2ed5a44c802 | 79 | |
chris215 | 0:d2ed5a44c802 | 80 | |
chris215 | 0:d2ed5a44c802 | 81 | |
chris215 | 0:d2ed5a44c802 | 82 | //////////////////////// genieEventIs /////////////////////////// |
chris215 | 0:d2ed5a44c802 | 83 | // |
chris215 | 0:d2ed5a44c802 | 84 | // Compares the cmd, object and index fields of the event's |
chris215 | 0:d2ed5a44c802 | 85 | // structure. |
chris215 | 0:d2ed5a44c802 | 86 | // |
chris215 | 0:d2ed5a44c802 | 87 | // Returns: TRUE if all the fields match the caller's parms |
chris215 | 0:d2ed5a44c802 | 88 | // FALSE if any of them don't |
chris215 | 0:d2ed5a44c802 | 89 | // |
chris215 | 0:d2ed5a44c802 | 90 | bool genieEventIs(genieFrame * e, uint8_t cmd, uint8_t object, uint8_t index) { |
chris215 | 0:d2ed5a44c802 | 91 | |
chris215 | 0:d2ed5a44c802 | 92 | |
chris215 | 0:d2ed5a44c802 | 93 | return (e->reportObject.cmd == cmd && |
chris215 | 0:d2ed5a44c802 | 94 | e->reportObject.object == object && |
chris215 | 0:d2ed5a44c802 | 95 | e->reportObject.index == index); |
chris215 | 0:d2ed5a44c802 | 96 | |
chris215 | 0:d2ed5a44c802 | 97 | |
chris215 | 0:d2ed5a44c802 | 98 | } |
chris215 | 0:d2ed5a44c802 | 99 | |
chris215 | 0:d2ed5a44c802 | 100 | ////////////////////// _geniePushLinkState ////////////////////// |
chris215 | 0:d2ed5a44c802 | 101 | // |
chris215 | 0:d2ed5a44c802 | 102 | // Push a link state onto a FILO stack |
chris215 | 0:d2ed5a44c802 | 103 | // |
chris215 | 0:d2ed5a44c802 | 104 | void _geniePushLinkState (uint8_t newstate) { |
chris215 | 0:d2ed5a44c802 | 105 | |
chris215 | 0:d2ed5a44c802 | 106 | |
chris215 | 0:d2ed5a44c802 | 107 | _genieLinkState++; |
chris215 | 0:d2ed5a44c802 | 108 | _genieSetLinkState(newstate); |
chris215 | 0:d2ed5a44c802 | 109 | |
chris215 | 0:d2ed5a44c802 | 110 | |
chris215 | 0:d2ed5a44c802 | 111 | } |
chris215 | 0:d2ed5a44c802 | 112 | |
chris215 | 0:d2ed5a44c802 | 113 | |
chris215 | 0:d2ed5a44c802 | 114 | ////////////////////// _geniePopLinkState ////////////////////// |
chris215 | 0:d2ed5a44c802 | 115 | // |
chris215 | 0:d2ed5a44c802 | 116 | // Pop a link state from a FILO stack |
chris215 | 0:d2ed5a44c802 | 117 | // |
chris215 | 0:d2ed5a44c802 | 118 | void _geniePopLinkState (void) { |
chris215 | 0:d2ed5a44c802 | 119 | if (_genieLinkState > &_genieLinkStates[0]) { |
chris215 | 0:d2ed5a44c802 | 120 | *_genieLinkState = 0xFF; |
chris215 | 0:d2ed5a44c802 | 121 | _genieLinkState--; |
chris215 | 0:d2ed5a44c802 | 122 | } |
chris215 | 0:d2ed5a44c802 | 123 | } |
chris215 | 0:d2ed5a44c802 | 124 | |
chris215 | 0:d2ed5a44c802 | 125 | ///////////////// _genieFlushSerialInput /////////////////// |
chris215 | 0:d2ed5a44c802 | 126 | // |
chris215 | 0:d2ed5a44c802 | 127 | // Removes and discards all characters from the currently |
chris215 | 0:d2ed5a44c802 | 128 | // used serial port's Rx buffer. |
chris215 | 0:d2ed5a44c802 | 129 | // |
chris215 | 0:d2ed5a44c802 | 130 | void _genieFlushSerialInput(void) { |
chris215 | 0:d2ed5a44c802 | 131 | do { |
chris215 | 0:d2ed5a44c802 | 132 | _genieGetchar(); |
chris215 | 0:d2ed5a44c802 | 133 | } while (_genieError != ERROR_NOCHAR); |
chris215 | 0:d2ed5a44c802 | 134 | } |
chris215 | 0:d2ed5a44c802 | 135 | |
chris215 | 0:d2ed5a44c802 | 136 | ///////////////////////// _handleError ///////////////////////// |
chris215 | 0:d2ed5a44c802 | 137 | // |
chris215 | 0:d2ed5a44c802 | 138 | // So far really just a debugging aid, but can be enhanced to |
chris215 | 0:d2ed5a44c802 | 139 | // help recover from errors. |
chris215 | 0:d2ed5a44c802 | 140 | // |
chris215 | 0:d2ed5a44c802 | 141 | void _handleError (void) { |
chris215 | 0:d2ed5a44c802 | 142 | // Serial2.write (_genieError + (1<<5)); |
chris215 | 0:d2ed5a44c802 | 143 | // if (_genieError == GENIE_NAK) genieResync(); |
chris215 | 0:d2ed5a44c802 | 144 | } |
chris215 | 0:d2ed5a44c802 | 145 | |
chris215 | 0:d2ed5a44c802 | 146 | |
chris215 | 0:d2ed5a44c802 | 147 | |
chris215 | 0:d2ed5a44c802 | 148 | |
chris215 | 0:d2ed5a44c802 | 149 | ////////////////////// _genieFlushEventQueue //////////////////// |
chris215 | 0:d2ed5a44c802 | 150 | // |
chris215 | 0:d2ed5a44c802 | 151 | // Reset all the event queue variables and start from scratch. |
chris215 | 0:d2ed5a44c802 | 152 | // |
chris215 | 0:d2ed5a44c802 | 153 | void _genieFlushEventQueue(void) { |
chris215 | 0:d2ed5a44c802 | 154 | _genieEventQueue.rd_index = 0; |
chris215 | 0:d2ed5a44c802 | 155 | _genieEventQueue.wr_index = 0; |
chris215 | 0:d2ed5a44c802 | 156 | _genieEventQueue.n_events = 0; |
chris215 | 0:d2ed5a44c802 | 157 | } |
chris215 | 0:d2ed5a44c802 | 158 | bool GenieReadable(void){ |
chris215 | 0:d2ed5a44c802 | 159 | if (screen.readable()) |
chris215 | 0:d2ed5a44c802 | 160 | { |
chris215 | 0:d2ed5a44c802 | 161 | return TRUE; |
chris215 | 0:d2ed5a44c802 | 162 | } |
chris215 | 0:d2ed5a44c802 | 163 | else |
chris215 | 0:d2ed5a44c802 | 164 | { |
chris215 | 0:d2ed5a44c802 | 165 | return FALSE; |
chris215 | 0:d2ed5a44c802 | 166 | } |
chris215 | 0:d2ed5a44c802 | 167 | } |
chris215 | 0:d2ed5a44c802 | 168 | ///////////////////////// genieDoEvents ///////////////////////// |
chris215 | 0:d2ed5a44c802 | 169 | // |
chris215 | 0:d2ed5a44c802 | 170 | // This is the heart of the Genie comms state machine. |
chris215 | 0:d2ed5a44c802 | 171 | // |
chris215 | 0:d2ed5a44c802 | 172 | uint16_t genieDoEvents (void) { |
chris215 | 0:d2ed5a44c802 | 173 | uint8_t c; |
chris215 | 0:d2ed5a44c802 | 174 | static uint8_t rx_data[6]; |
chris215 | 0:d2ed5a44c802 | 175 | static uint8_t checksum = 0; |
chris215 | 0:d2ed5a44c802 | 176 | |
chris215 | 0:d2ed5a44c802 | 177 | if (GenieReadable()) |
chris215 | 0:d2ed5a44c802 | 178 | { |
chris215 | 0:d2ed5a44c802 | 179 | c = _genieGetchar(); |
chris215 | 0:d2ed5a44c802 | 180 | //pc.putc(c); |
chris215 | 0:d2ed5a44c802 | 181 | |
chris215 | 0:d2ed5a44c802 | 182 | //////////////////////////////////////////// |
chris215 | 0:d2ed5a44c802 | 183 | // |
chris215 | 0:d2ed5a44c802 | 184 | // If there are no characters to process and we have |
chris215 | 0:d2ed5a44c802 | 185 | // queued events call the user's handler function. |
chris215 | 0:d2ed5a44c802 | 186 | // |
chris215 | 0:d2ed5a44c802 | 187 | if (_genieError == ERROR_NOCHAR) { |
chris215 | 0:d2ed5a44c802 | 188 | //pc.printf("EventCalled!\n\r"); |
chris215 | 0:d2ed5a44c802 | 189 | if (_genieEventQueue.n_events > 0 && _genieUserHandler!= NULL) (_genieUserHandler)(); |
chris215 | 0:d2ed5a44c802 | 190 | return GENIE_EVENT_NONE; |
chris215 | 0:d2ed5a44c802 | 191 | } |
chris215 | 0:d2ed5a44c802 | 192 | |
chris215 | 0:d2ed5a44c802 | 193 | /////////////////////////////////////////// |
chris215 | 0:d2ed5a44c802 | 194 | // |
chris215 | 0:d2ed5a44c802 | 195 | // Main state machine |
chris215 | 0:d2ed5a44c802 | 196 | // |
chris215 | 0:d2ed5a44c802 | 197 | switch (_genieGetLinkState()) { |
chris215 | 0:d2ed5a44c802 | 198 | case GENIE_LINK_IDLE: |
chris215 | 0:d2ed5a44c802 | 199 | switch (c) { |
chris215 | 0:d2ed5a44c802 | 200 | case GENIE_REPORT_EVENT: |
chris215 | 0:d2ed5a44c802 | 201 | // event frame out of the blue, set the link state |
chris215 | 0:d2ed5a44c802 | 202 | // and fall through to the frame-accumulate code |
chris215 | 0:d2ed5a44c802 | 203 | // at the end of this function |
chris215 | 0:d2ed5a44c802 | 204 | _geniePushLinkState(GENIE_LINK_RXEVENT); |
chris215 | 0:d2ed5a44c802 | 205 | break; |
chris215 | 0:d2ed5a44c802 | 206 | |
chris215 | 0:d2ed5a44c802 | 207 | default: |
chris215 | 0:d2ed5a44c802 | 208 | // error, bad character, no other character |
chris215 | 0:d2ed5a44c802 | 209 | // is acceptable in this state |
chris215 | 0:d2ed5a44c802 | 210 | return GENIE_EVENT_RXCHAR; |
chris215 | 0:d2ed5a44c802 | 211 | |
chris215 | 0:d2ed5a44c802 | 212 | } |
chris215 | 0:d2ed5a44c802 | 213 | break; |
chris215 | 0:d2ed5a44c802 | 214 | |
chris215 | 0:d2ed5a44c802 | 215 | case GENIE_LINK_WFAN: |
chris215 | 0:d2ed5a44c802 | 216 | switch (c) { |
chris215 | 0:d2ed5a44c802 | 217 | |
chris215 | 0:d2ed5a44c802 | 218 | |
chris215 | 0:d2ed5a44c802 | 219 | case GENIE_ACK: |
chris215 | 0:d2ed5a44c802 | 220 | _geniePopLinkState(); |
chris215 | 0:d2ed5a44c802 | 221 | return GENIE_EVENT_RXCHAR; |
chris215 | 0:d2ed5a44c802 | 222 | |
chris215 | 0:d2ed5a44c802 | 223 | |
chris215 | 0:d2ed5a44c802 | 224 | case GENIE_NAK: |
chris215 | 0:d2ed5a44c802 | 225 | _geniePopLinkState(); |
chris215 | 0:d2ed5a44c802 | 226 | _genieError = ERROR_NAK; |
chris215 | 0:d2ed5a44c802 | 227 | _handleError(); |
chris215 | 0:d2ed5a44c802 | 228 | return GENIE_EVENT_RXCHAR; |
chris215 | 0:d2ed5a44c802 | 229 | |
chris215 | 0:d2ed5a44c802 | 230 | case GENIE_REPORT_EVENT: |
chris215 | 0:d2ed5a44c802 | 231 | // event frame out of the blue while waiting for an ACK |
chris215 | 0:d2ed5a44c802 | 232 | // save/set the link state and fall through to the |
chris215 | 0:d2ed5a44c802 | 233 | // frame-accumulate code at the end of this function |
chris215 | 0:d2ed5a44c802 | 234 | _geniePushLinkState(GENIE_LINK_RXEVENT); |
chris215 | 0:d2ed5a44c802 | 235 | break; |
chris215 | 0:d2ed5a44c802 | 236 | |
chris215 | 0:d2ed5a44c802 | 237 | |
chris215 | 0:d2ed5a44c802 | 238 | case GENIE_REPORT_OBJ: |
chris215 | 0:d2ed5a44c802 | 239 | default: |
chris215 | 0:d2ed5a44c802 | 240 | // error, bad character |
chris215 | 0:d2ed5a44c802 | 241 | return GENIE_EVENT_RXCHAR; |
chris215 | 0:d2ed5a44c802 | 242 | } |
chris215 | 0:d2ed5a44c802 | 243 | break; |
chris215 | 0:d2ed5a44c802 | 244 | |
chris215 | 0:d2ed5a44c802 | 245 | |
chris215 | 0:d2ed5a44c802 | 246 | case GENIE_LINK_WF_RXREPORT: // waiting for the first byte of a report |
chris215 | 0:d2ed5a44c802 | 247 | switch (c) { |
chris215 | 0:d2ed5a44c802 | 248 | |
chris215 | 0:d2ed5a44c802 | 249 | case GENIE_REPORT_EVENT: |
chris215 | 0:d2ed5a44c802 | 250 | // event frame out of the blue while waiting for the first |
chris215 | 0:d2ed5a44c802 | 251 | // byte of a report frame |
chris215 | 0:d2ed5a44c802 | 252 | // save/set the link state and fall through to the |
chris215 | 0:d2ed5a44c802 | 253 | // frame-accumulate code at the end of this function |
chris215 | 0:d2ed5a44c802 | 254 | _geniePushLinkState(GENIE_LINK_RXEVENT); |
chris215 | 0:d2ed5a44c802 | 255 | break; |
chris215 | 0:d2ed5a44c802 | 256 | |
chris215 | 0:d2ed5a44c802 | 257 | |
chris215 | 0:d2ed5a44c802 | 258 | case GENIE_REPORT_OBJ: |
chris215 | 0:d2ed5a44c802 | 259 | // first byte of a report frame |
chris215 | 0:d2ed5a44c802 | 260 | // replace the GENIE_LINK_WF_RXREPORT link state |
chris215 | 0:d2ed5a44c802 | 261 | // with GENIE_LINK_RXREPORT to indicate that we |
chris215 | 0:d2ed5a44c802 | 262 | // are now receiving a report frame |
chris215 | 0:d2ed5a44c802 | 263 | _geniePopLinkState(); |
chris215 | 0:d2ed5a44c802 | 264 | _geniePushLinkState(GENIE_LINK_RXREPORT); |
chris215 | 0:d2ed5a44c802 | 265 | break; |
chris215 | 0:d2ed5a44c802 | 266 | |
chris215 | 0:d2ed5a44c802 | 267 | |
chris215 | 0:d2ed5a44c802 | 268 | case GENIE_ACK: |
chris215 | 0:d2ed5a44c802 | 269 | case GENIE_NAK: |
chris215 | 0:d2ed5a44c802 | 270 | default: |
chris215 | 0:d2ed5a44c802 | 271 | // error, bad character |
chris215 | 0:d2ed5a44c802 | 272 | return GENIE_EVENT_RXCHAR; |
chris215 | 0:d2ed5a44c802 | 273 | // break; |
chris215 | 0:d2ed5a44c802 | 274 | } |
chris215 | 0:d2ed5a44c802 | 275 | |
chris215 | 0:d2ed5a44c802 | 276 | |
chris215 | 0:d2ed5a44c802 | 277 | case GENIE_LINK_RXREPORT: // already receiving report |
chris215 | 0:d2ed5a44c802 | 278 | case GENIE_LINK_RXEVENT: // already receiving event |
chris215 | 0:d2ed5a44c802 | 279 | default: |
chris215 | 0:d2ed5a44c802 | 280 | break; |
chris215 | 0:d2ed5a44c802 | 281 | |
chris215 | 0:d2ed5a44c802 | 282 | } |
chris215 | 0:d2ed5a44c802 | 283 | |
chris215 | 0:d2ed5a44c802 | 284 | |
chris215 | 0:d2ed5a44c802 | 285 | /////////////////////////////////////////////////////// |
chris215 | 0:d2ed5a44c802 | 286 | // We get here if we are in the process of receiving |
chris215 | 0:d2ed5a44c802 | 287 | // a report or event frame. Accumulate GENIE_FRAME_SIZE |
chris215 | 0:d2ed5a44c802 | 288 | // bytes into a local buffer then queue them as a frame |
chris215 | 0:d2ed5a44c802 | 289 | // into the event queue |
chris215 | 0:d2ed5a44c802 | 290 | // |
chris215 | 0:d2ed5a44c802 | 291 | if (_genieGetLinkState() == GENIE_LINK_RXREPORT || \ |
chris215 | 0:d2ed5a44c802 | 292 | _genieGetLinkState() == GENIE_LINK_RXEVENT) { |
chris215 | 0:d2ed5a44c802 | 293 | |
chris215 | 0:d2ed5a44c802 | 294 | checksum = (rxframe_count == 0) ? c : checksum ^ c; |
chris215 | 0:d2ed5a44c802 | 295 | |
chris215 | 0:d2ed5a44c802 | 296 | |
chris215 | 0:d2ed5a44c802 | 297 | rx_data[rxframe_count] = c; |
chris215 | 0:d2ed5a44c802 | 298 | |
chris215 | 0:d2ed5a44c802 | 299 | |
chris215 | 0:d2ed5a44c802 | 300 | if (rxframe_count == GENIE_FRAME_SIZE -1) { |
chris215 | 0:d2ed5a44c802 | 301 | //pc.printf("FrameReceived!\n\r"); |
chris215 | 0:d2ed5a44c802 | 302 | // all bytes received, if the CS is good |
chris215 | 0:d2ed5a44c802 | 303 | // queue the frame and restore the link state |
chris215 | 0:d2ed5a44c802 | 304 | if (checksum == 0) { |
chris215 | 0:d2ed5a44c802 | 305 | _genieEnqueueEvent(rx_data); |
chris215 | 0:d2ed5a44c802 | 306 | if (_genieEventQueue.n_events > 0 && _genieUserHandler!= NULL) (_genieUserHandler)(); |
chris215 | 0:d2ed5a44c802 | 307 | //return GENIE_EVENT_NONE; |
chris215 | 0:d2ed5a44c802 | 308 | rxframe_count = 0; |
chris215 | 0:d2ed5a44c802 | 309 | // revert the link state to whatever it was before |
chris215 | 0:d2ed5a44c802 | 310 | // we started accumulating this frame |
chris215 | 0:d2ed5a44c802 | 311 | _geniePopLinkState(); |
chris215 | 0:d2ed5a44c802 | 312 | return GENIE_EVENT_RXCHAR; |
chris215 | 0:d2ed5a44c802 | 313 | } else { |
chris215 | 0:d2ed5a44c802 | 314 | _genieError = ERROR_BAD_CS; |
chris215 | 0:d2ed5a44c802 | 315 | _handleError(); |
chris215 | 0:d2ed5a44c802 | 316 | } |
chris215 | 0:d2ed5a44c802 | 317 | } |
chris215 | 0:d2ed5a44c802 | 318 | rxframe_count++; |
chris215 | 0:d2ed5a44c802 | 319 | return GENIE_EVENT_RXCHAR; |
chris215 | 0:d2ed5a44c802 | 320 | } |
chris215 | 1:95e0e194a412 | 321 | } |
chris215 | 1:95e0e194a412 | 322 | return GENIE_EVENT_NONE; |
chris215 | 0:d2ed5a44c802 | 323 | } |
chris215 | 0:d2ed5a44c802 | 324 | |
chris215 | 0:d2ed5a44c802 | 325 | ////////////////////// genieDequeueEvent /////////////////// |
chris215 | 0:d2ed5a44c802 | 326 | // |
chris215 | 0:d2ed5a44c802 | 327 | // Copy the bytes from a queued input event to a buffer supplied |
chris215 | 0:d2ed5a44c802 | 328 | // by the caller. |
chris215 | 0:d2ed5a44c802 | 329 | // |
chris215 | 0:d2ed5a44c802 | 330 | // Parms: genieFrame * buff, a pointer to the user's buffer |
chris215 | 0:d2ed5a44c802 | 331 | // |
chris215 | 0:d2ed5a44c802 | 332 | // Returns: TRUE if there was an event to copy |
chris215 | 0:d2ed5a44c802 | 333 | // FALSE if not |
chris215 | 0:d2ed5a44c802 | 334 | // |
chris215 | 0:d2ed5a44c802 | 335 | bool genieDequeueEvent(genieFrame * buff) { |
chris215 | 0:d2ed5a44c802 | 336 | |
chris215 | 0:d2ed5a44c802 | 337 | |
chris215 | 0:d2ed5a44c802 | 338 | if (_genieEventQueue.n_events > 0) { |
chris215 | 0:d2ed5a44c802 | 339 | memcpy (buff, &_genieEventQueue.frames[_genieEventQueue.rd_index], |
chris215 | 0:d2ed5a44c802 | 340 | GENIE_FRAME_SIZE); |
chris215 | 0:d2ed5a44c802 | 341 | _genieEventQueue.rd_index++; |
chris215 | 0:d2ed5a44c802 | 342 | _genieEventQueue.rd_index &= MAX_GENIE_EVENTS -1; |
chris215 | 0:d2ed5a44c802 | 343 | _genieEventQueue.n_events--; |
chris215 | 0:d2ed5a44c802 | 344 | return TRUE; |
chris215 | 0:d2ed5a44c802 | 345 | } |
chris215 | 0:d2ed5a44c802 | 346 | return FALSE; |
chris215 | 0:d2ed5a44c802 | 347 | } |
chris215 | 0:d2ed5a44c802 | 348 | |
chris215 | 0:d2ed5a44c802 | 349 | |
chris215 | 0:d2ed5a44c802 | 350 | |
chris215 | 0:d2ed5a44c802 | 351 | |
chris215 | 0:d2ed5a44c802 | 352 | |
chris215 | 0:d2ed5a44c802 | 353 | ////////////////////// _genieWaitForIdle //////////////////////// |
chris215 | 0:d2ed5a44c802 | 354 | // |
chris215 | 0:d2ed5a44c802 | 355 | // Wait for the link to become idle or for the timeout period, |
chris215 | 0:d2ed5a44c802 | 356 | // whichever comes first. |
chris215 | 0:d2ed5a44c802 | 357 | // |
chris215 | 0:d2ed5a44c802 | 358 | void _genieWaitForIdle (void) { |
chris215 | 0:d2ed5a44c802 | 359 | uint16_t do_event_result; |
chris215 | 0:d2ed5a44c802 | 360 | long timeout = t.read_ms() + _genieTimeout; |
chris215 | 0:d2ed5a44c802 | 361 | |
chris215 | 0:d2ed5a44c802 | 362 | for ( ; t.read_ms() < timeout;) { |
chris215 | 0:d2ed5a44c802 | 363 | |
chris215 | 0:d2ed5a44c802 | 364 | |
chris215 | 0:d2ed5a44c802 | 365 | do_event_result = genieDoEvents(); |
chris215 | 0:d2ed5a44c802 | 366 | // if there was a character received from the |
chris215 | 0:d2ed5a44c802 | 367 | // display restart the timeout because doEvents |
chris215 | 0:d2ed5a44c802 | 368 | // is in the process of receiving something |
chris215 | 0:d2ed5a44c802 | 369 | if (do_event_result == GENIE_EVENT_RXCHAR) { |
chris215 | 0:d2ed5a44c802 | 370 | timeout = t.read_ms() + _genieTimeout; |
chris215 | 0:d2ed5a44c802 | 371 | return; |
chris215 | 0:d2ed5a44c802 | 372 | } |
chris215 | 0:d2ed5a44c802 | 373 | |
chris215 | 0:d2ed5a44c802 | 374 | if (_genieGetLinkState() == GENIE_LINK_IDLE) { |
chris215 | 0:d2ed5a44c802 | 375 | return; |
chris215 | 0:d2ed5a44c802 | 376 | } |
chris215 | 0:d2ed5a44c802 | 377 | } |
chris215 | 0:d2ed5a44c802 | 378 | _genieError = ERROR_TIMEOUT; |
chris215 | 0:d2ed5a44c802 | 379 | _handleError(); |
chris215 | 0:d2ed5a44c802 | 380 | return; |
chris215 | 0:d2ed5a44c802 | 381 | } |
chris215 | 0:d2ed5a44c802 | 382 | |
chris215 | 0:d2ed5a44c802 | 383 | ///////////////////////// genieWriteObject ////////////////////// |
chris215 | 0:d2ed5a44c802 | 384 | // |
chris215 | 0:d2ed5a44c802 | 385 | // Write data to an object on the display |
chris215 | 0:d2ed5a44c802 | 386 | // |
chris215 | 0:d2ed5a44c802 | 387 | uint16_t genieWriteObject (uint16_t object, uint16_t index, uint16_t data) |
chris215 | 0:d2ed5a44c802 | 388 | { |
chris215 | 0:d2ed5a44c802 | 389 | uint16_t msb, lsb ; |
chris215 | 0:d2ed5a44c802 | 390 | uint8_t checksum ; |
chris215 | 0:d2ed5a44c802 | 391 | |
chris215 | 0:d2ed5a44c802 | 392 | |
chris215 | 0:d2ed5a44c802 | 393 | _genieWaitForIdle(); |
chris215 | 0:d2ed5a44c802 | 394 | |
chris215 | 0:d2ed5a44c802 | 395 | |
chris215 | 0:d2ed5a44c802 | 396 | lsb = data&0xFF; |
chris215 | 0:d2ed5a44c802 | 397 | msb = (data>>8) & 0xFF; |
chris215 | 0:d2ed5a44c802 | 398 | |
chris215 | 0:d2ed5a44c802 | 399 | |
chris215 | 0:d2ed5a44c802 | 400 | _genieError = ERROR_NONE; |
chris215 | 0:d2ed5a44c802 | 401 | |
chris215 | 0:d2ed5a44c802 | 402 | |
chris215 | 0:d2ed5a44c802 | 403 | _geniePutchar(GENIE_WRITE_OBJ) ; checksum = GENIE_WRITE_OBJ ; |
chris215 | 0:d2ed5a44c802 | 404 | _geniePutchar(object) ; checksum ^= object ; |
chris215 | 0:d2ed5a44c802 | 405 | _geniePutchar(index) ; checksum ^= index ; |
chris215 | 0:d2ed5a44c802 | 406 | _geniePutchar(msb) ; checksum ^= msb; |
chris215 | 0:d2ed5a44c802 | 407 | _geniePutchar(lsb) ; checksum ^= lsb; |
chris215 | 0:d2ed5a44c802 | 408 | _geniePutchar(checksum) ; |
chris215 | 0:d2ed5a44c802 | 409 | |
chris215 | 0:d2ed5a44c802 | 410 | |
chris215 | 1:95e0e194a412 | 411 | _geniePushLinkState(GENIE_LINK_WFAN); |
chris215 | 1:95e0e194a412 | 412 | return GENIE_EVENT_NONE; |
chris215 | 0:d2ed5a44c802 | 413 | } |
chris215 | 0:d2ed5a44c802 | 414 | |
chris215 | 0:d2ed5a44c802 | 415 | /////////////////////// genieWriteContrast ////////////////////// |
chris215 | 0:d2ed5a44c802 | 416 | // |
chris215 | 0:d2ed5a44c802 | 417 | // Alter the display contrast (backlight) |
chris215 | 0:d2ed5a44c802 | 418 | // |
chris215 | 0:d2ed5a44c802 | 419 | // Parms: uint8_t value: The required contrast setting, only |
chris215 | 0:d2ed5a44c802 | 420 | // values from 0 to 15 are valid. 0 or 1 for most displays |
chris215 | 0:d2ed5a44c802 | 421 | // and 0 to 15 for the uLCD-43 |
chris215 | 0:d2ed5a44c802 | 422 | // |
chris215 | 0:d2ed5a44c802 | 423 | void genieWriteContrast (uint16_t value) { |
chris215 | 0:d2ed5a44c802 | 424 | unsigned int checksum ; |
chris215 | 0:d2ed5a44c802 | 425 | |
chris215 | 0:d2ed5a44c802 | 426 | |
chris215 | 0:d2ed5a44c802 | 427 | _genieWaitForIdle(); |
chris215 | 0:d2ed5a44c802 | 428 | |
chris215 | 0:d2ed5a44c802 | 429 | |
chris215 | 0:d2ed5a44c802 | 430 | _geniePutchar(GENIE_WRITE_CONTRAST) ; checksum = GENIE_WRITE_CONTRAST ; |
chris215 | 0:d2ed5a44c802 | 431 | _geniePutchar(value) ; checksum ^= value ; |
chris215 | 0:d2ed5a44c802 | 432 | _geniePutchar(checksum) ; |
chris215 | 0:d2ed5a44c802 | 433 | |
chris215 | 0:d2ed5a44c802 | 434 | |
chris215 | 0:d2ed5a44c802 | 435 | _geniePushLinkState(GENIE_LINK_WFAN); |
chris215 | 0:d2ed5a44c802 | 436 | |
chris215 | 0:d2ed5a44c802 | 437 | |
chris215 | 0:d2ed5a44c802 | 438 | } |
chris215 | 0:d2ed5a44c802 | 439 | |
chris215 | 0:d2ed5a44c802 | 440 | |
chris215 | 0:d2ed5a44c802 | 441 | //////////////////////// _genieWriteStrX /////////////////////// |
chris215 | 0:d2ed5a44c802 | 442 | // |
chris215 | 0:d2ed5a44c802 | 443 | // Non-user function used by genieWriteStr() and genieWriteStrU() |
chris215 | 0:d2ed5a44c802 | 444 | // |
chris215 | 0:d2ed5a44c802 | 445 | static int _genieWriteStrX (uint16_t code, uint16_t index, char *string) |
chris215 | 0:d2ed5a44c802 | 446 | { |
chris215 | 0:d2ed5a44c802 | 447 | char *p ; |
chris215 | 0:d2ed5a44c802 | 448 | unsigned int checksum ; |
chris215 | 0:d2ed5a44c802 | 449 | int len = strlen (string) ; |
chris215 | 0:d2ed5a44c802 | 450 | |
chris215 | 0:d2ed5a44c802 | 451 | |
chris215 | 0:d2ed5a44c802 | 452 | if (len > 255) |
chris215 | 0:d2ed5a44c802 | 453 | return -1 ; |
chris215 | 0:d2ed5a44c802 | 454 | |
chris215 | 0:d2ed5a44c802 | 455 | |
chris215 | 0:d2ed5a44c802 | 456 | _genieWaitForIdle(); |
chris215 | 0:d2ed5a44c802 | 457 | |
chris215 | 0:d2ed5a44c802 | 458 | |
chris215 | 0:d2ed5a44c802 | 459 | _geniePutchar(code) ; checksum = code ; |
chris215 | 0:d2ed5a44c802 | 460 | _geniePutchar(index) ; checksum ^= index ; |
chris215 | 0:d2ed5a44c802 | 461 | _geniePutchar((unsigned char)len) ; checksum ^= len ; |
chris215 | 0:d2ed5a44c802 | 462 | for (p = string ; *p ; ++p) { |
chris215 | 0:d2ed5a44c802 | 463 | _geniePutchar (*p) ; |
chris215 | 0:d2ed5a44c802 | 464 | checksum ^= *p ; |
chris215 | 0:d2ed5a44c802 | 465 | } |
chris215 | 0:d2ed5a44c802 | 466 | _geniePutchar(checksum) ; |
chris215 | 0:d2ed5a44c802 | 467 | |
chris215 | 0:d2ed5a44c802 | 468 | |
chris215 | 0:d2ed5a44c802 | 469 | _geniePushLinkState(GENIE_LINK_WFAN); |
chris215 | 0:d2ed5a44c802 | 470 | |
chris215 | 0:d2ed5a44c802 | 471 | |
chris215 | 0:d2ed5a44c802 | 472 | return 0 ; |
chris215 | 0:d2ed5a44c802 | 473 | } |
chris215 | 0:d2ed5a44c802 | 474 | /////////////////////// genieWriteStr //////////////////////// |
chris215 | 0:d2ed5a44c802 | 475 | // |
chris215 | 0:d2ed5a44c802 | 476 | // Write a string to the display (ASCII) |
chris215 | 0:d2ed5a44c802 | 477 | // |
chris215 | 0:d2ed5a44c802 | 478 | uint16_t genieWriteStr (uint16_t index, char *string) { |
chris215 | 0:d2ed5a44c802 | 479 | |
chris215 | 0:d2ed5a44c802 | 480 | return _genieWriteStrX (GENIE_WRITE_STR, index, string); |
chris215 | 0:d2ed5a44c802 | 481 | } |
chris215 | 0:d2ed5a44c802 | 482 | |
chris215 | 0:d2ed5a44c802 | 483 | |
chris215 | 0:d2ed5a44c802 | 484 | /////////////////////// genieWriteStrU //////////////////////// |
chris215 | 0:d2ed5a44c802 | 485 | // |
chris215 | 0:d2ed5a44c802 | 486 | // Write a string to the display (Unicode) |
chris215 | 0:d2ed5a44c802 | 487 | // |
chris215 | 0:d2ed5a44c802 | 488 | uint16_t genieWriteStrU (uint16_t index, char *string) { |
chris215 | 0:d2ed5a44c802 | 489 | |
chris215 | 0:d2ed5a44c802 | 490 | |
chris215 | 0:d2ed5a44c802 | 491 | return _genieWriteStrX (GENIE_WRITE_STRU, index, string); |
chris215 | 0:d2ed5a44c802 | 492 | |
chris215 | 0:d2ed5a44c802 | 493 | |
chris215 | 0:d2ed5a44c802 | 494 | } |
chris215 | 0:d2ed5a44c802 | 495 | /////////////////// genieAttachEventHandler ////////////////////// |
chris215 | 0:d2ed5a44c802 | 496 | // |
chris215 | 0:d2ed5a44c802 | 497 | // "Attaches" a pointer to the users event handler by writing |
chris215 | 0:d2ed5a44c802 | 498 | // the pointer into the variable used by doEVents() |
chris215 | 0:d2ed5a44c802 | 499 | // |
chris215 | 0:d2ed5a44c802 | 500 | void genieAttachEventHandler (genieUserEventHandlerPtr handler) { |
chris215 | 0:d2ed5a44c802 | 501 | _genieUserHandler = handler; |
chris215 | 0:d2ed5a44c802 | 502 | } |
chris215 | 0:d2ed5a44c802 | 503 | |
chris215 | 0:d2ed5a44c802 | 504 | |
chris215 | 0:d2ed5a44c802 | 505 | ////////////////////// _genieEnqueueEvent /////////////////// |
chris215 | 0:d2ed5a44c802 | 506 | // |
chris215 | 0:d2ed5a44c802 | 507 | // Copy the bytes from a buffer supplied by the caller |
chris215 | 0:d2ed5a44c802 | 508 | // to the input queue |
chris215 | 0:d2ed5a44c802 | 509 | // |
chris215 | 0:d2ed5a44c802 | 510 | // Parms: uint8_t * data, a pointer to the user's data |
chris215 | 0:d2ed5a44c802 | 511 | // |
chris215 | 0:d2ed5a44c802 | 512 | // Returns: TRUE if there was an empty location in the queue |
chris215 | 0:d2ed5a44c802 | 513 | // to copy the data into |
chris215 | 0:d2ed5a44c802 | 514 | // FALSE if not |
chris215 | 0:d2ed5a44c802 | 515 | // Sets: ERROR_REPLY_OVR if there was no room in the queue |
chris215 | 0:d2ed5a44c802 | 516 | // |
chris215 | 0:d2ed5a44c802 | 517 | bool _genieEnqueueEvent (uint8_t * data) { |
chris215 | 0:d2ed5a44c802 | 518 | |
chris215 | 0:d2ed5a44c802 | 519 | |
chris215 | 0:d2ed5a44c802 | 520 | if (_genieEventQueue.n_events < MAX_GENIE_EVENTS-2) { |
chris215 | 0:d2ed5a44c802 | 521 | memcpy (&_genieEventQueue.frames[_genieEventQueue.wr_index], data, |
chris215 | 0:d2ed5a44c802 | 522 | GENIE_FRAME_SIZE); |
chris215 | 0:d2ed5a44c802 | 523 | _genieEventQueue.wr_index++; |
chris215 | 0:d2ed5a44c802 | 524 | _genieEventQueue.wr_index &= MAX_GENIE_EVENTS -1; |
chris215 | 0:d2ed5a44c802 | 525 | _genieEventQueue.n_events++; |
chris215 | 0:d2ed5a44c802 | 526 | return TRUE; |
chris215 | 0:d2ed5a44c802 | 527 | } else { |
chris215 | 0:d2ed5a44c802 | 528 | _genieError = ERROR_REPLY_OVR; |
chris215 | 0:d2ed5a44c802 | 529 | _handleError(); |
chris215 | 0:d2ed5a44c802 | 530 | return FALSE; |
chris215 | 0:d2ed5a44c802 | 531 | } |
chris215 | 0:d2ed5a44c802 | 532 | } |
chris215 | 0:d2ed5a44c802 | 533 | ///////////////////// _genieSetLinkState //////////////////////// |
chris215 | 0:d2ed5a44c802 | 534 | // |
chris215 | 0:d2ed5a44c802 | 535 | // Set the logical state of the link to the display. |
chris215 | 0:d2ed5a44c802 | 536 | // |
chris215 | 0:d2ed5a44c802 | 537 | // Parms: uint16_t newstate, a value to be written to the |
chris215 | 0:d2ed5a44c802 | 538 | // link's _genieLinkState variable. Valid values are |
chris215 | 0:d2ed5a44c802 | 539 | // GENIE_LINK_IDLE 0 |
chris215 | 0:d2ed5a44c802 | 540 | // GENIE_LINK_WFAN 1 // waiting for Ack or Nak |
chris215 | 0:d2ed5a44c802 | 541 | // GENIE_LINK_WF_RXREPORT 2 // waiting for a report frame |
chris215 | 0:d2ed5a44c802 | 542 | // GENIE_LINK_RXREPORT 3 // receiving a report frame |
chris215 | 0:d2ed5a44c802 | 543 | // GENIE_LINK_RXEVENT 4 // receiving an event frame |
chris215 | 0:d2ed5a44c802 | 544 | // GENIE_LINK_SHDN 5 |
chris215 | 0:d2ed5a44c802 | 545 | // |
chris215 | 0:d2ed5a44c802 | 546 | void _genieSetLinkState (uint16_t newstate) { |
chris215 | 0:d2ed5a44c802 | 547 | |
chris215 | 0:d2ed5a44c802 | 548 | *_genieLinkState = newstate; |
chris215 | 0:d2ed5a44c802 | 549 | |
chris215 | 0:d2ed5a44c802 | 550 | |
chris215 | 0:d2ed5a44c802 | 551 | if (newstate == GENIE_LINK_RXREPORT || \ |
chris215 | 0:d2ed5a44c802 | 552 | newstate == GENIE_LINK_RXEVENT) |
chris215 | 0:d2ed5a44c802 | 553 | rxframe_count = 0; |
chris215 | 0:d2ed5a44c802 | 554 | } |
chris215 | 0:d2ed5a44c802 | 555 | |
chris215 | 0:d2ed5a44c802 | 556 | |
chris215 | 0:d2ed5a44c802 | 557 | /////////////////////// _genieGetLinkState ////////////////////// |
chris215 | 0:d2ed5a44c802 | 558 | // |
chris215 | 0:d2ed5a44c802 | 559 | // Get the current logical state of the link to the display. |
chris215 | 0:d2ed5a44c802 | 560 | // |
chris215 | 0:d2ed5a44c802 | 561 | uint16_t _genieGetLinkState (void) { |
chris215 | 0:d2ed5a44c802 | 562 | return *_genieLinkState; |
chris215 | 0:d2ed5a44c802 | 563 | } |
chris215 | 0:d2ed5a44c802 | 564 | |
chris215 | 0:d2ed5a44c802 | 565 | /////////////////////// _geniePutchar /////////////////////////// |
chris215 | 0:d2ed5a44c802 | 566 | // |
chris215 | 0:d2ed5a44c802 | 567 | // Output the supplied character to the Genie display over |
chris215 | 0:d2ed5a44c802 | 568 | // the selected serial port |
chris215 | 0:d2ed5a44c802 | 569 | // |
chris215 | 0:d2ed5a44c802 | 570 | void _geniePutchar (uint8_t c) { |
chris215 | 0:d2ed5a44c802 | 571 | // if (screen != NULL) |
chris215 | 0:d2ed5a44c802 | 572 | screen.putc(c); |
chris215 | 0:d2ed5a44c802 | 573 | } |
chris215 | 0:d2ed5a44c802 | 574 | |
chris215 | 0:d2ed5a44c802 | 575 | |
chris215 | 0:d2ed5a44c802 | 576 | //////////////////////// _genieGetchar ////////////////////////// |
chris215 | 0:d2ed5a44c802 | 577 | // |
chris215 | 0:d2ed5a44c802 | 578 | // Get a character from the selected Genie serial port |
chris215 | 0:d2ed5a44c802 | 579 | // |
chris215 | 0:d2ed5a44c802 | 580 | // Returns: ERROR_NOHANDLER if an Rx handler has not |
chris215 | 0:d2ed5a44c802 | 581 | // been defined |
chris215 | 0:d2ed5a44c802 | 582 | // ERROR_NOCHAR if no bytes have beeb received |
chris215 | 0:d2ed5a44c802 | 583 | // The char if there was one to get |
chris215 | 0:d2ed5a44c802 | 584 | // Sets: _genieError with any errors encountered |
chris215 | 0:d2ed5a44c802 | 585 | // |
chris215 | 0:d2ed5a44c802 | 586 | uint8_t _genieGetchar() { |
chris215 | 0:d2ed5a44c802 | 587 | |
chris215 | 0:d2ed5a44c802 | 588 | _genieError = ERROR_NONE; |
chris215 | 0:d2ed5a44c802 | 589 | |
chris215 | 0:d2ed5a44c802 | 590 | return (screen.getc()); |
chris215 | 0:d2ed5a44c802 | 591 | } |
chris215 | 0:d2ed5a44c802 | 592 | |
chris215 | 0:d2ed5a44c802 | 593 | void RxIrqHandler(void) |
chris215 | 0:d2ed5a44c802 | 594 | { |
chris215 | 0:d2ed5a44c802 | 595 | do |
chris215 | 0:d2ed5a44c802 | 596 | { |
chris215 | 0:d2ed5a44c802 | 597 | genieDoEvents(); |
chris215 | 0:d2ed5a44c802 | 598 | } |
chris215 | 0:d2ed5a44c802 | 599 | while(screen.readable ()); |
chris215 | 0:d2ed5a44c802 | 600 | } |
chris215 | 0:d2ed5a44c802 | 601 | |
chris215 | 0:d2ed5a44c802 | 602 | |
chris215 | 0:d2ed5a44c802 | 603 | void TickerIrq(void) |
chris215 | 0:d2ed5a44c802 | 604 | { |
chris215 | 0:d2ed5a44c802 | 605 | } |
chris215 | 0:d2ed5a44c802 | 606 | |
chris215 | 0:d2ed5a44c802 | 607 | |
chris215 | 0:d2ed5a44c802 | 608 | void SetupGenie(void) |
chris215 | 0:d2ed5a44c802 | 609 | { |
chris215 | 0:d2ed5a44c802 | 610 | screen.attach(&RxIrqHandler,Serial::RxIrq); |
chris215 | 0:d2ed5a44c802 | 611 | t.start(); |
chris215 | 0:d2ed5a44c802 | 612 | // EventChk.attach(&TickerIrq,0.05); |
chris215 | 0:d2ed5a44c802 | 613 | } |