Fork of MODSERIAL that works with LPC4088
Fork of MODSERIAL by
GETC.cpp@1:b7e435fbfe8e, 2010-11-21 (annotated)
- Committer:
- AjK
- Date:
- Sun Nov 21 02:15:07 2010 +0000
- Revision:
- 1:b7e435fbfe8e
- Parent:
- 0:eb2522b41db8
- Child:
- 8:775f860e94d3
1.1
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
AjK | 0:eb2522b41db8 | 1 | /* |
AjK | 0:eb2522b41db8 | 2 | Copyright (c) 2010 Andy Kirkham |
AjK | 0:eb2522b41db8 | 3 | |
AjK | 0:eb2522b41db8 | 4 | Permission is hereby granted, free of charge, to any person obtaining a copy |
AjK | 0:eb2522b41db8 | 5 | of this software and associated documentation files (the "Software"), to deal |
AjK | 0:eb2522b41db8 | 6 | in the Software without restriction, including without limitation the rights |
AjK | 0:eb2522b41db8 | 7 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
AjK | 0:eb2522b41db8 | 8 | copies of the Software, and to permit persons to whom the Software is |
AjK | 0:eb2522b41db8 | 9 | furnished to do so, subject to the following conditions: |
AjK | 0:eb2522b41db8 | 10 | |
AjK | 0:eb2522b41db8 | 11 | The above copyright notice and this permission notice shall be included in |
AjK | 0:eb2522b41db8 | 12 | all copies or substantial portions of the Software. |
AjK | 0:eb2522b41db8 | 13 | |
AjK | 0:eb2522b41db8 | 14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
AjK | 0:eb2522b41db8 | 15 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
AjK | 0:eb2522b41db8 | 16 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
AjK | 0:eb2522b41db8 | 17 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
AjK | 0:eb2522b41db8 | 18 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
AjK | 0:eb2522b41db8 | 19 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
AjK | 0:eb2522b41db8 | 20 | THE SOFTWARE. |
AjK | 0:eb2522b41db8 | 21 | */ |
AjK | 0:eb2522b41db8 | 22 | |
AjK | 0:eb2522b41db8 | 23 | #include "MODSERIAL.h" |
AjK | 0:eb2522b41db8 | 24 | #include "MACROS.h" |
AjK | 0:eb2522b41db8 | 25 | |
AjK | 0:eb2522b41db8 | 26 | namespace AjK { |
AjK | 0:eb2522b41db8 | 27 | |
AjK | 0:eb2522b41db8 | 28 | int |
AjK | 0:eb2522b41db8 | 29 | MODSERIAL::__getc(bool block) |
AjK | 0:eb2522b41db8 | 30 | { |
AjK | 0:eb2522b41db8 | 31 | if (block) { while ( MODSERIAL_RX_BUFFER_EMPTY ) ; } // Blocks. |
AjK | 0:eb2522b41db8 | 32 | else if ( MODSERIAL_RX_BUFFER_EMPTY ) return -1; |
AjK | 0:eb2522b41db8 | 33 | |
AjK | 0:eb2522b41db8 | 34 | int c = buffer[RxIrq][buffer_out[RxIrq]]; |
AjK | 0:eb2522b41db8 | 35 | buffer_out[RxIrq]++; |
AjK | 0:eb2522b41db8 | 36 | if (buffer_out[RxIrq] >= buffer_size[RxIrq]) { |
AjK | 0:eb2522b41db8 | 37 | buffer_out[RxIrq] = 0; |
AjK | 0:eb2522b41db8 | 38 | } |
AjK | 0:eb2522b41db8 | 39 | |
AjK | 0:eb2522b41db8 | 40 | // If we have made space in the RX Buffer then copy over |
AjK | 0:eb2522b41db8 | 41 | // any characters in the RX FIFO that my reside there. |
AjK | 0:eb2522b41db8 | 42 | // Temporarily disable the RX IRQ so that we do not re-enter |
AjK | 0:eb2522b41db8 | 43 | // it under interrupts. |
AjK | 0:eb2522b41db8 | 44 | if ( ! MODSERIAL_RX_BUFFER_FULL ) { |
AjK | 0:eb2522b41db8 | 45 | uint32_t ier = _IER; |
AjK | 0:eb2522b41db8 | 46 | _IER &= ~(1UL << 0); |
AjK | 0:eb2522b41db8 | 47 | isr_rx(); |
AjK | 0:eb2522b41db8 | 48 | _IER = ier; |
AjK | 0:eb2522b41db8 | 49 | } |
AjK | 0:eb2522b41db8 | 50 | |
AjK | 0:eb2522b41db8 | 51 | buffer_count[RxIrq]--; |
AjK | 0:eb2522b41db8 | 52 | return c; |
AjK | 0:eb2522b41db8 | 53 | } |
AjK | 0:eb2522b41db8 | 54 | |
AjK | 0:eb2522b41db8 | 55 | }; // namespace AjK ends |