This mDot firmware will allow USB to directly utilize AT command without the need the use of RS232 DB9 port.
Dependencies: MTS-Serial libmDot mbed-rtos mbed
Fork of mDot_USB_AT_firmware by
ATSerialFlowControl.cpp@14:eecf7851d6ff, 2016-10-19 (annotated)
- Committer:
- ahario
- Date:
- Wed Oct 19 10:26:54 2016 +0000
- Revision:
- 14:eecf7851d6ff
- Parent:
- 9:ff62b20f7000
Update from libmDot has overwritten the orginal main.cpp; ; Main.cpp has been updated again to allow AT command to be accessed via USB
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Mike Fiore |
9:ff62b20f7000 | 1 | #include "mbed.h" |
Mike Fiore |
9:ff62b20f7000 | 2 | #include "ATSerialFlowControl.h" |
Mike Fiore |
9:ff62b20f7000 | 3 | #include "MTSLog.h" |
Mike Fiore |
9:ff62b20f7000 | 4 | #include "Utils.h" |
Mike Fiore |
9:ff62b20f7000 | 5 | |
Mike Fiore |
9:ff62b20f7000 | 6 | using namespace mts; |
Mike Fiore |
9:ff62b20f7000 | 7 | |
Mike Fiore |
9:ff62b20f7000 | 8 | ATSerialFlowControl::ATSerialFlowControl(PinName TXD, PinName RXD, PinName RTS, PinName CTS, int txBufSize, int rxBufSize) |
Mike Fiore |
9:ff62b20f7000 | 9 | : ATSerial(TXD, RXD, txBufSize, rxBufSize) |
Mike Fiore |
9:ff62b20f7000 | 10 | , rxReadyFlag(false) |
Mike Fiore |
9:ff62b20f7000 | 11 | , rts(RTS) |
Mike Fiore |
9:ff62b20f7000 | 12 | , cts(CTS) |
Mike Fiore |
9:ff62b20f7000 | 13 | { |
Mike Fiore |
9:ff62b20f7000 | 14 | notifyStartSending(); |
Mike Fiore |
9:ff62b20f7000 | 15 | |
Mike Fiore |
9:ff62b20f7000 | 16 | // Calculate the high and low watermark values |
Mike Fiore |
9:ff62b20f7000 | 17 | highThreshold = mts_max(rxBufSize - 10, rxBufSize * 0.85); |
Mike Fiore |
9:ff62b20f7000 | 18 | lowThreshold = rxBufSize * 0.3; |
Mike Fiore |
9:ff62b20f7000 | 19 | |
Mike Fiore |
9:ff62b20f7000 | 20 | // Setup the low watermark callback on the internal receive buffer |
Mike Fiore |
9:ff62b20f7000 | 21 | rxBuffer.attach(this, &ATSerialFlowControl::notifyStartSending, lowThreshold, LESS); |
Mike Fiore |
9:ff62b20f7000 | 22 | } |
Mike Fiore |
9:ff62b20f7000 | 23 | |
Mike Fiore |
9:ff62b20f7000 | 24 | ATSerialFlowControl::~ATSerialFlowControl() |
Mike Fiore |
9:ff62b20f7000 | 25 | { |
Mike Fiore |
9:ff62b20f7000 | 26 | } |
Mike Fiore |
9:ff62b20f7000 | 27 | |
Mike Fiore |
9:ff62b20f7000 | 28 | //Override the rxClear function to make sure that flow control lines are set correctly. |
Mike Fiore |
9:ff62b20f7000 | 29 | void ATSerialFlowControl::rxClear() |
Mike Fiore |
9:ff62b20f7000 | 30 | { |
Mike Fiore |
9:ff62b20f7000 | 31 | MTSBufferedIO::rxClear(); |
Mike Fiore |
9:ff62b20f7000 | 32 | notifyStartSending(); |
Mike Fiore |
9:ff62b20f7000 | 33 | } |
Mike Fiore |
9:ff62b20f7000 | 34 | |
Mike Fiore |
9:ff62b20f7000 | 35 | void ATSerialFlowControl::notifyStartSending() |
Mike Fiore |
9:ff62b20f7000 | 36 | { |
Mike Fiore |
9:ff62b20f7000 | 37 | if(!rxReadyFlag) { |
Mike Fiore |
9:ff62b20f7000 | 38 | rts.write(0); |
Mike Fiore |
9:ff62b20f7000 | 39 | rxReadyFlag = true; |
Mike Fiore |
9:ff62b20f7000 | 40 | //printf("RTS LOW: READY - RX[%d/%d]\r\n", rxBuffer.size(), rxBuffer.capacity()); |
Mike Fiore |
9:ff62b20f7000 | 41 | } |
Mike Fiore |
9:ff62b20f7000 | 42 | } |
Mike Fiore |
9:ff62b20f7000 | 43 | |
Mike Fiore |
9:ff62b20f7000 | 44 | void ATSerialFlowControl::notifyStopSending() |
Mike Fiore |
9:ff62b20f7000 | 45 | { |
Mike Fiore |
9:ff62b20f7000 | 46 | if(rxReadyFlag) { |
Mike Fiore |
9:ff62b20f7000 | 47 | rts.write(1); |
Mike Fiore |
9:ff62b20f7000 | 48 | rxReadyFlag = false; |
Mike Fiore |
9:ff62b20f7000 | 49 | //printf("RTS HIGH: NOT-READY - RX[%d/%d]\r\n", rxBuffer.size(), rxBuffer.capacity()); |
Mike Fiore |
9:ff62b20f7000 | 50 | } |
Mike Fiore |
9:ff62b20f7000 | 51 | } |
Mike Fiore |
9:ff62b20f7000 | 52 | |
Mike Fiore |
9:ff62b20f7000 | 53 | void ATSerialFlowControl::handleRead() |
Mike Fiore |
9:ff62b20f7000 | 54 | { |
Mike Fiore |
9:ff62b20f7000 | 55 | ATSerial::handleRead(); |
Mike Fiore |
9:ff62b20f7000 | 56 | if (rxBuffer.size() >= highThreshold) { |
Mike Fiore |
9:ff62b20f7000 | 57 | notifyStopSending(); |
Mike Fiore |
9:ff62b20f7000 | 58 | } |
Mike Fiore |
9:ff62b20f7000 | 59 | } |
Mike Fiore |
9:ff62b20f7000 | 60 | |
Mike Fiore |
9:ff62b20f7000 | 61 | void ATSerialFlowControl::handleWrite() |
Mike Fiore |
9:ff62b20f7000 | 62 | { |
Mike Fiore |
9:ff62b20f7000 | 63 | ATSerial::handleWrite(); |
Mike Fiore |
9:ff62b20f7000 | 64 | } |
Mike Fiore |
9:ff62b20f7000 | 65 |