Kerry Martin / RA8875

KSM edits to RA8875

Dependents:   Liz_Test_Code

RA8875_Touch_FT5206.cpp@177:8620cdfcdbf2, 2019-07-11 (annotated)

Committer:
kerrysmartin
Date:
Thu Jul 11 14:02:46 2019 +0000
Revision:
177:8620cdfcdbf2
Parent:
166:53fd4a876dac 
Initial check in

Who changed what in which revision?

UserRevisionLine numberNew contents of line
WiredHome 165:695c24cc5197 1
WiredHome 165:695c24cc5197 2
WiredHome 165:695c24cc5197 3 #include "RA8875.h"
WiredHome 165:695c24cc5197 4
WiredHome 165:695c24cc5197 5 //#define DEBUG "RAFT" // RA8875 FT5206
WiredHome 165:695c24cc5197 6 // ...
WiredHome 165:695c24cc5197 7 // INFO("Stuff to show %d", var); // new-line is automatically appended
WiredHome 165:695c24cc5197 8 //
WiredHome 165:695c24cc5197 9 #if (defined(DEBUG) && !defined(TARGET_LPC11U24))
WiredHome 165:695c24cc5197 10 #define INFO(x, ...) std::printf("[INF %s %4d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__);
WiredHome 165:695c24cc5197 11 #define WARN(x, ...) std::printf("[WRN %s %4d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__);
WiredHome 165:695c24cc5197 12 #define ERR(x, ...) std::printf("[ERR %s %4d] "x"\r\n", DEBUG, __LINE__, ##__VA_ARGS__);
WiredHome 165:695c24cc5197 13 static void HexDump(const char * title, const uint8_t * p, int count)
WiredHome 165:695c24cc5197 14 {
WiredHome 165:695c24cc5197 15 int i;
WiredHome 165:695c24cc5197 16 char buf[100] = "0000: ";
WiredHome 165:695c24cc5197 17
WiredHome 165:695c24cc5197 18 if (*title)
WiredHome 165:695c24cc5197 19 INFO("%s", title);
WiredHome 165:695c24cc5197 20 for (i=0; i<count; ) {
WiredHome 165:695c24cc5197 21 sprintf(buf + strlen(buf), "%02X ", *(p+i));
WiredHome 165:695c24cc5197 22 if ((++i & 0x0F) == 0x00) {
WiredHome 165:695c24cc5197 23 INFO("%s", buf);
WiredHome 165:695c24cc5197 24 if (i < count)
WiredHome 165:695c24cc5197 25 sprintf(buf, "%04X: ", i);
WiredHome 165:695c24cc5197 26 else
WiredHome 165:695c24cc5197 27 buf[0] = '\0';
WiredHome 165:695c24cc5197 28 }
WiredHome 165:695c24cc5197 29 }
WiredHome 165:695c24cc5197 30 if (strlen(buf))
WiredHome 165:695c24cc5197 31 INFO("%s", buf);
WiredHome 165:695c24cc5197 32 }
WiredHome 165:695c24cc5197 33 #else
WiredHome 165:695c24cc5197 34 #define INFO(x, ...)
WiredHome 165:695c24cc5197 35 #define WARN(x, ...)
WiredHome 165:695c24cc5197 36 #define ERR(x, ...)
WiredHome 165:695c24cc5197 37 #define HexDump(a, b, c)
WiredHome 165:695c24cc5197 38 #endif
WiredHome 165:695c24cc5197 39
WiredHome 165:695c24cc5197 40
WiredHome 165:695c24cc5197 41
WiredHome 165:695c24cc5197 42 // Translate from FT5206 Event Flag to Touch Code to API-match the
WiredHome 165:695c24cc5197 43 // alternate resistive touch screen driver common in the RA8875
WiredHome 165:695c24cc5197 44 // displays.
WiredHome 165:695c24cc5197 45 static const TouchCode_t FT5206_EventFlagToTouchCode[4] = {
WiredHome 165:695c24cc5197 46 touch, // 00b Put Down
WiredHome 165:695c24cc5197 47 release, // 01b Put Up
WiredHome 165:695c24cc5197 48 held, // 10b Contact
WiredHome 165:695c24cc5197 49 no_touch // 11b Reserved
WiredHome 165:695c24cc5197 50 };
WiredHome 165:695c24cc5197 51
WiredHome 165:695c24cc5197 52
WiredHome 165:695c24cc5197 53 RetCode_t RA8875::FT5206_Init() {
WiredHome 165:695c24cc5197 54 char data[2] = {FT5206_DEVICE_MODE, 0};
WiredHome 165:695c24cc5197 55
WiredHome 165:695c24cc5197 56 m_i2c->write(m_addr, data, 2);
WiredHome 165:695c24cc5197 57 return noerror;
WiredHome 165:695c24cc5197 58 }
WiredHome 165:695c24cc5197 59
WiredHome 165:695c24cc5197 60 uint8_t RA8875::FT5206_TouchPositions(void) {
WiredHome 165:695c24cc5197 61 uint8_t valXH;
WiredHome 165:695c24cc5197 62 uint8_t valYH;
WiredHome 165:695c24cc5197 63
WiredHome 165:695c24cc5197 64 //INFO("FT5206_TouchPositions()");
WiredHome 165:695c24cc5197 65 numberOfTouchPoints = FT5206_ReadRegU8(FT5206_TD_STATUS) & 0xF;
WiredHome 165:695c24cc5197 66 //INFO(" numOfTouchPoints %d", numberOfTouchPoints);
WiredHome 165:695c24cc5197 67 gesture = FT5206_ReadRegU8(FT5206_GEST_ID);
WiredHome 165:695c24cc5197 68 //INFO(" gesture %d", gesture);
WiredHome 165:695c24cc5197 69
WiredHome 166:53fd4a876dac 70 valXH = FT5206_ReadRegU8(FT5206_TOUCH5_XH);
WiredHome 166:53fd4a876dac 71 valYH = FT5206_ReadRegU8(FT5206_TOUCH5_YH);
WiredHome 166:53fd4a876dac 72 touchInfo[4].touchCode = FT5206_EventFlagToTouchCode[valXH >> 6];
WiredHome 166:53fd4a876dac 73 touchInfo[4].touchID = (valYH >> 4);
WiredHome 166:53fd4a876dac 74 touchInfo[4].coordinates.x = (valXH & 0x0f)*256 + FT5206_ReadRegU8(FT5206_TOUCH5_XL);
WiredHome 166:53fd4a876dac 75 touchInfo[4].coordinates.y = (valYH & 0x0f)*256 + FT5206_ReadRegU8(FT5206_TOUCH5_YL);
WiredHome 166:53fd4a876dac 76
WiredHome 166:53fd4a876dac 77 valXH = FT5206_ReadRegU8(FT5206_TOUCH4_XH);
WiredHome 166:53fd4a876dac 78 valYH = FT5206_ReadRegU8(FT5206_TOUCH4_YH);
WiredHome 166:53fd4a876dac 79 touchInfo[3].touchCode = FT5206_EventFlagToTouchCode[valXH >> 6];
WiredHome 166:53fd4a876dac 80 touchInfo[3].touchID = (valYH >> 4);
WiredHome 166:53fd4a876dac 81 touchInfo[3].coordinates.x = (valXH & 0x0f)*256 + FT5206_ReadRegU8(FT5206_TOUCH4_XL);
WiredHome 166:53fd4a876dac 82 touchInfo[3].coordinates.y = (valYH & 0x0f)*256 + FT5206_ReadRegU8(FT5206_TOUCH4_YL);
WiredHome 166:53fd4a876dac 83
WiredHome 166:53fd4a876dac 84 valXH = FT5206_ReadRegU8(FT5206_TOUCH3_XH);
WiredHome 166:53fd4a876dac 85 valYH = FT5206_ReadRegU8(FT5206_TOUCH3_YH);
WiredHome 166:53fd4a876dac 86 touchInfo[2].touchCode = FT5206_EventFlagToTouchCode[valXH >> 6];
WiredHome 166:53fd4a876dac 87 touchInfo[2].touchID = (valYH >> 4);
WiredHome 166:53fd4a876dac 88 touchInfo[2].coordinates.x = (valXH & 0x0f)*256 + FT5206_ReadRegU8(FT5206_TOUCH3_XL);
WiredHome 166:53fd4a876dac 89 touchInfo[2].coordinates.y = (valYH & 0x0f)*256 + FT5206_ReadRegU8(FT5206_TOUCH3_YL);
WiredHome 166:53fd4a876dac 90
WiredHome 166:53fd4a876dac 91 valXH = FT5206_ReadRegU8(FT5206_TOUCH2_XH);
WiredHome 166:53fd4a876dac 92 valYH = FT5206_ReadRegU8(FT5206_TOUCH2_YH);
WiredHome 166:53fd4a876dac 93 touchInfo[1].touchCode = FT5206_EventFlagToTouchCode[valXH >> 6];
WiredHome 166:53fd4a876dac 94 touchInfo[1].touchID = (valYH >> 4);
WiredHome 166:53fd4a876dac 95 touchInfo[1].coordinates.x = (valXH & 0x0f)*256 + FT5206_ReadRegU8(FT5206_TOUCH2_XL);
WiredHome 166:53fd4a876dac 96 touchInfo[1].coordinates.y = (valYH & 0x0f)*256 + FT5206_ReadRegU8(FT5206_TOUCH2_YL);
WiredHome 166:53fd4a876dac 97
WiredHome 166:53fd4a876dac 98 valXH = FT5206_ReadRegU8(FT5206_TOUCH1_XH);
WiredHome 166:53fd4a876dac 99 valYH = FT5206_ReadRegU8(FT5206_TOUCH1_YH);
WiredHome 166:53fd4a876dac 100 touchInfo[0].touchCode = FT5206_EventFlagToTouchCode[valXH >> 6];
WiredHome 166:53fd4a876dac 101 touchInfo[0].touchID = (valYH >> 4);
WiredHome 166:53fd4a876dac 102 touchInfo[0].coordinates.x = (valXH & 0x0f)*256 + FT5206_ReadRegU8(FT5206_TOUCH1_XL);
WiredHome 166:53fd4a876dac 103 touchInfo[0].coordinates.y = (valYH & 0x0f)*256 + FT5206_ReadRegU8(FT5206_TOUCH1_YL);
WiredHome 166:53fd4a876dac 104
WiredHome 165:695c24cc5197 105 return numberOfTouchPoints;
WiredHome 165:695c24cc5197 106 }