John Mitchell / lpc4088_displaymodule_GC500_2_5inch

Repository for import to local machine

Dependencies:   DMBasicGUI DMSupport

USBHostGCUtilities.cpp@8:26e49e6955bd, 2017-07-31 (annotated)

Committer:
jmitc91516
Date:
Mon Jul 31 15:37:57 2017 +0000
Revision:
8:26e49e6955bd
Parent:
1:a5258871b33d 
Method ramp scrolling improved, and more bitmaps moved to QSPI memory

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jmitc91516 1:a5258871b33d 1
jmitc91516 1:a5258871b33d 2 #include "USBHostGCUtilities.h"
jmitc91516 1:a5258871b33d 3
jmitc91516 1:a5258871b33d 4 /*
jmitc91516 1:a5258871b33d 5 As described in the header file, this is a class containing utility functions for communicating with the GC,
jmitc91516 1:a5258871b33d 6 to try and reduce the amount of similar code duplicated between classes.
jmitc91516 1:a5258871b33d 7
jmitc91516 1:a5258871b33d 8 All functions are static.
jmitc91516 1:a5258871b33d 9 */
jmitc91516 1:a5258871b33d 10
jmitc91516 1:a5258871b33d 11 /*
jmitc91516 1:a5258871b33d 12 As the name implies, sends a command to the GC and returns the response.
jmitc91516 1:a5258871b33d 13
jmitc91516 1:a5258871b33d 14 Args: pointer to a USBDeviceConnected instance
jmitc91516 1:a5258871b33d 15 pointer to a USBHostGC instance
jmitc91516 1:a5258871b33d 16 pointer to a buffer containing the command, as a null-terminated string
jmitc91516 1:a5258871b33d 17 pointer to a buffer to contain the response, as a null-terminated string
jmitc91516 1:a5258871b33d 18
jmitc91516 1:a5258871b33d 19 No return code (it is up to the caller to examine the response to see whether
jmitc91516 1:a5258871b33d 20 the command succeeded or failed)
jmitc91516 1:a5258871b33d 21 */
jmitc91516 1:a5258871b33d 22 void USBHostGCUtilities::SendCommandToGCAndGetResponse(USBDeviceConnected* usbDevice, USBHostGC* usbHostGC, char* command, char* response)
jmitc91516 1:a5258871b33d 23 {
jmitc91516 1:a5258871b33d 24 while(usbHostGC->ExecutingSetDeviceReport()) {}
jmitc91516 1:a5258871b33d 25
jmitc91516 1:a5258871b33d 26 usbHostGC->SetDeviceReport(usbDevice, command, response);
jmitc91516 1:a5258871b33d 27 //#define DEBUG_PRINT_HERE
jmitc91516 1:a5258871b33d 28 #ifdef DEBUG_PRINT_HERE
jmitc91516 1:a5258871b33d 29 char dbg[100];
jmitc91516 1:a5258871b33d 30 sprintf(dbg, "USB::SendCmd cmd \"%s\", response \"%s\"", command, response);
jmitc91516 1:a5258871b33d 31 SpecialDebugPrint(dbg, 10, 275);
jmitc91516 1:a5258871b33d 32 #endif // DEBUG_PRINT_HERE
jmitc91516 1:a5258871b33d 33 }
jmitc91516 1:a5258871b33d 34
jmitc91516 1:a5258871b33d 35
jmitc91516 1:a5258871b33d 36 /*
jmitc91516 1:a5258871b33d 37 Sends a command to the GC for which we expect a response of "DACK" if successful,
jmitc91516 1:a5258871b33d 38 "DNAK" or "EPKT" if failure.
jmitc91516 1:a5258871b33d 39
jmitc91516 1:a5258871b33d 40 Args: pointer to a USBDeviceConnected instance
jmitc91516 1:a5258871b33d 41 pointer to a USBHostGC instance
jmitc91516 1:a5258871b33d 42 a pointer to the command in question, as a null terminated string
jmitc91516 1:a5258871b33d 43
jmitc91516 1:a5258871b33d 44 Returns true if the GC responded with "DACK", false for anything else
jmitc91516 1:a5258871b33d 45 */
jmitc91516 1:a5258871b33d 46 bool USBHostGCUtilities::SendCommandToGCWithDACKResponse(USBDeviceConnected* usbDevice, USBHostGC* usbHostGC, char *cmd)
jmitc91516 1:a5258871b33d 47 {
jmitc91516 1:a5258871b33d 48 char response[50];
jmitc91516 1:a5258871b33d 49 SendCommandToGCAndGetResponse(usbDevice, usbHostGC, cmd, response);
jmitc91516 1:a5258871b33d 50 // We expect a response like this: "DACK" for success, "DNAK" for failure, "EPKT" for error
jmitc91516 1:a5258871b33d 51
jmitc91516 1:a5258871b33d 52 return (response[1] == 'A');
jmitc91516 1:a5258871b33d 53 }