John Alexander
initial release
Diff: Components/Display/Display_class.h
- Revision:
- 0:c523920bcc09
- Child:
- 9:367d1f390cb2
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Components/Display/Display_class.h Mon Nov 28 11:25:33 2016 +0000
@@ -0,0 +1,408 @@
+/**
+ ******************************************************************************
+ * @file Display.h
+ * @author AST / EST
+ * @version V0.0.1
+ * @date 14-April-2015
+ * @brief Header file for display
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+*/
+
+#ifndef __DISPLAY_H
+#define __DISPLAY_H
+
+/* Includes ------------------------------------------------------------------*/
+#include "mbed.h"
+#include "stmpe1600_class.h"
+#include "DevI2C.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * GPIO monitor pin state register
+ * 16 bit register LSB at lowest offset (little endian)
+ */
+#define GPMR 0x10
+/**
+ * STMPE1600 GPIO set pin state register
+ * 16 bit register LSB at lowest offset (little endian)
+ */
+#define GPSR 0x12
+/**
+ * STMPE1600 GPIO set pin direction register
+ * 16 bit register LSB at lowest offset
+ */
+#define GPDR 0x14
+
+
+/**
+ * cache the full set of expanded GPIO values to avoid i2c reading
+ */
+static union CurIOVal_u {
+ uint8_t bytes[4]; /*!< 4 bytes array i/o view */
+ uint32_t u32; /*!< single dword i/o view */
+}
+/** cache the extended IO values */
+CurIOVal;
+
+/**
+ * lookup table for digit to bit position
+ */
+static int DisplayBitPos[4]={0, 7, 16, 16+7};
+
+/**
+ * @defgroup XNUCLEO53L0A1_7Segment 7 segment display
+ *
+ * macro use for human readable segment building
+ * @code
+ * --s0--
+ * s s
+ * 5 1
+ * --s6--
+ * s s
+ * 4 2
+ * --s3-- . s7 (dp)
+ * @endcode
+ *
+ * @{
+ */
+/** decimal point bit mapping* */
+#define DP (1<<7)
+
+/** sgement s0 bit mapping*/
+#define S0 (1<<3)
+/** sgement s1 bit mapping*/
+#define S1 (1<<5)
+/** sgement s2 bit mapping*/
+#define S2 (1<<6)
+/** sgement s3 bit mapping*/
+#define S3 (1<<4)
+/** sgement s4 bit mapping*/
+#define S4 (1<<0)
+/** sgement s5 bit mapping*/
+#define S5 (1<<1)
+/** sgement s6 bit mapping*/
+#define S6 (1<<2)
+
+/**
+ * build a character by defining the non lighted segment (not one and no DP)
+ *
+ * @param ... literal sum and or combine of any macro to define any segment #S0 .. #S6
+ *
+ * example '9' is all segment on but S4
+ * @code
+ * ['9']= NOT_7_NO_DP(S4),
+ * @endcode
+ */
+#define NOT_7_NO_DP( ... ) (uint8_t) ~( __VA_ARGS__ + DP )
+
+/**
+ * Ascii to 7 segment lookup table
+ *
+ * Most common character are supported and follow http://www.twyman.org.uk/Fonts/
+ * few extra special \@ ^~ ... etc are present for specific demo purpose
+ */
+#ifndef __cpluplus
+/* refer to http://www.twyman.org.uk/Fonts/ */
+static const uint8_t ascii_to_display_lut[256]={
+ 0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,
+ [32]= 0,
+ 0,0,0,0,0,0,0,0,
+ 0,
+ [42]= NOT_7_NO_DP(),
+ 0,0,
+ [45]= S6,
+ 0,0,
+ [48]= NOT_7_NO_DP(S6),
+ [49]= S1+S2,
+ [50]= S0+S1+S6+S4+S3,
+ [51]= NOT_7_NO_DP(S4+S5),
+ [52]= S5+S1+S6+S2,
+ [53]= NOT_7_NO_DP(S1+S4),
+ [54]= NOT_7_NO_DP(S1),
+ [55]= S0+S1+S2,
+ [56]= NOT_7_NO_DP(0),
+ [57]= NOT_7_NO_DP(S4),
+ 0,0,0,
+ [61]= S3+S6,
+ 0,
+ [63]= NOT_7_NO_DP(S5+S3+S2),
+ [64]= S0+S3,
+ [65]= NOT_7_NO_DP(S3),
+ [66]= NOT_7_NO_DP(S0+S1), /* as b */
+ [67]= S0+S3+S4+S5, // same as [
+ [68]= S0+S3+S4+S5, // same as [ DUMMY
+ [69]= NOT_7_NO_DP(S1+S2),
+ [70]= S6+S5+S4+S0,
+ [71]= NOT_7_NO_DP(S4), /* same as 9 */
+ [72]= NOT_7_NO_DP(S0+S3),
+ [73]= S1+S2,
+ [74]= S1+S2+S3+S4,
+ [75]= NOT_7_NO_DP(S0+S3), /* same as H */
+ [76]= S3+S4+S5,
+ [77]= S0+S4+S2, /* same as m*/
+ [78]= S2+S4+S6, /* same as n*/
+ [79]= NOT_7_NO_DP(S6),
+ [80]= S0+S1+S2+S5+S6, // sames as 'q'
+ [81]= NOT_7_NO_DP(S3+S2),
+ [82]= S4+S6,
+ [83]= NOT_7_NO_DP(S1+S4), /* sasme as 5 */
+ [84]= NOT_7_NO_DP(S0+S1+S2), /* sasme as t */
+ [85]= NOT_7_NO_DP(S6+S0),
+ [86]= S4+S3+S2, // is u but u use U
+ [87]= S1+S3+S5,
+ [88]= NOT_7_NO_DP(S0+S3), // similar to H
+ [89]= NOT_7_NO_DP(S0+S4),
+ [90]= S0+S1+S6+S4+S3, // same as 2
+ [91]= S0+S3+S4+S5,
+ 0,
+ [93]= S0+S3+S2+S1,
+ [94]= S0, /* use as top bar */
+ [95]= S3,
+ 0,
+ [97]= S2+ S3+ S4+ S6 ,
+ [98]= NOT_7_NO_DP(S0+S1),
+ [99]= S6+S4+S3,
+ [100]= NOT_7_NO_DP(S0+S5),
+ [101]= NOT_7_NO_DP(S2),
+ [102]= S6+S5+S4+S0, /* same as F */
+ [103]= NOT_7_NO_DP(S4), /* same as 9 */
+ [104]= S6+S5+S4+S2,
+ [105]= S4,
+ [106]= S1+S2+S3+S4,
+ [107]= S6+S5+S4+S2, /* a h */
+ [108]= S3+S4,
+ [109]= S0+S4+S2, /* same as */
+ [110]= S2+S4+S6,
+ [111]= S6+S4+S3+S2,
+ [112]= NOT_7_NO_DP(S3+S2), // same as P
+ [113]= S0+S1+S2+S5+S6,
+ [114]= S4+S6,
+ [115]= NOT_7_NO_DP(S1+S4),
+ [116]= NOT_7_NO_DP(S0+S1+S2),
+ [117]= S4+S3+S2+S5+S1, // U
+ [118]= S4+S3+S2, // is u but u use U
+ [119]= S1+S3+S5,
+ [120]= NOT_7_NO_DP(S0+S3), // similar to H
+ [121]= NOT_7_NO_DP(S0+S4),
+ [122]= S0+S1+S6+S4+S3, // same as 2
+ 0,0,0,
+ [126]= S0+S3+S6 /* 3 h bar */
+};
+#else
+/* refer to http://www.twyman.org.uk/Fonts/ */
+static const uint8_t ascii_to_display_lut[256]={
+ [' ']= 0,
+ ['-']= S6,
+ ['_']= S3,
+ ['=']= S3+S6,
+ ['~']= S0+S3+S6, /* 3 h bar */
+ ['^']= S0, /* use as top bar */
+
+ ['?']= NOT_7_NO_DP(S5+S3+S2),
+ ['*']= NOT_7_NO_DP(),
+ ['[']= S0+S3+S4+S5,
+ [']']= S0+S3+S2+S1,
+ ['@']= S0+S3,
+
+ ['0']= NOT_7_NO_DP(S6),
+ ['1']= S1+S2,
+ ['2']= S0+S1+S6+S4+S3,
+ ['3']= NOT_7_NO_DP(S4+S5),
+ ['4']= S5+S1+S6+S2,
+ ['5']= NOT_7_NO_DP(S1+S4),
+ ['6']= NOT_7_NO_DP(S1),
+ ['7']= S0+S1+S2,
+ ['8']= NOT_7_NO_DP(0),
+ ['9']= NOT_7_NO_DP(S4),
+
+ ['a']= S2+ S3+ S4+ S6 ,
+ ['b']= NOT_7_NO_DP(S0+S1),
+ ['c']= S6+S4+S3,
+ ['d']= NOT_7_NO_DP(S0+S5),
+ ['e']= NOT_7_NO_DP(S2),
+ ['f']= S6+S5+S4+S0, /* same as F */
+ ['g']= NOT_7_NO_DP(S4), /* same as 9 */
+ ['h']= S6+S5+S4+S2,
+ ['i']= S4,
+ ['j']= S1+S2+S3+S4,
+ ['k']= S6+S5+S4+S2, /* a h */
+ ['l']= S3+S4,
+ ['m']= S0+S4+S2, /* same as */
+ ['n']= S2+S4+S6,
+ ['o']= S6+S4+S3+S2,
+ ['p']= NOT_7_NO_DP(S3+S2), // same as P
+ ['q']= S0+S1+S2+S5+S6,
+ ['r']= S4+S6,
+ ['s']= NOT_7_NO_DP(S1+S4),
+ ['t']= NOT_7_NO_DP(S0+S1+S2),
+ ['u']= S4+S3+S2+S5+S1, // U
+ ['v']= S4+S3+S2, // is u but u use U
+ ['w']= S1+S3+S5,
+ ['x']= NOT_7_NO_DP(S0+S3), // similar to H
+ ['y']= NOT_7_NO_DP(S0+S4),
+ ['z']= S0+S1+S6+S4+S3, // same as 2
+
+ ['A']= NOT_7_NO_DP(S3),
+ ['B']= NOT_7_NO_DP(S0+S1), /* as b */
+ ['C']= S0+S3+S4+S5, // same as [
+ ['E']= NOT_7_NO_DP(S1+S2),
+ ['F']= S6+S5+S4+S0,
+ ['G']= NOT_7_NO_DP(S4), /* same as 9 */
+ ['H']= NOT_7_NO_DP(S0+S3),
+ ['I']= S1+S2,
+ ['J']= S1+S2+S3+S4,
+ ['K']= NOT_7_NO_DP(S0+S3), /* same as H */
+ ['L']= S3+S4+S5,
+ ['M']= S0+S4+S2, /* same as m*/
+ ['N']= S2+S4+S6, /* same as n*/
+ ['O']= NOT_7_NO_DP(S6),
+ ['P']= S0+S1+S2+S5+S6, // sames as 'q'
+ ['Q']= NOT_7_NO_DP(S3+S2),
+ ['R']= S4+S6,
+ ['S']= NOT_7_NO_DP(S1+S4), /* sasme as 5 */
+ ['T']= NOT_7_NO_DP(S0+S1+S2), /* sasme as t */
+ ['U']= NOT_7_NO_DP(S6+S0),
+ ['V']= S4+S3+S2, // is u but u use U
+ ['W']= S1+S3+S5,
+ ['X']= NOT_7_NO_DP(S0+S3), // similar to H
+ ['Y']= NOT_7_NO_DP(S0+S4),
+ ['Z']= S0+S1+S6+S4+S3 // same as 2
+};
+#endif
+
+
+#undef S0
+#undef S1
+#undef S2
+#undef S3
+#undef S4
+#undef S5
+#undef S6
+#undef DP
+
+/** @} */
+
+//#define DISPLAY_DELAY 1 // in mSec
+
+/* Classes -------------------------------------------------------------------*/
+/** Class representing Display
+ */
+
+class Display
+{
+private:
+ STMPE1600 &stmpe1600_exp0;
+ STMPE1600 &stmpe1600_exp1;
+public:
+ /** Constructor
+ * @param[in] &stmpe_1600 device handler to be used for display control
+ */
+ Display (STMPE1600 &stmpe_1600_exp0, STMPE1600 &stmpe_1600_exp1) : stmpe1600_exp0(stmpe_1600_exp0), stmpe1600_exp1(stmpe_1600_exp1) {
+ uint16_t ExpanderData;
+
+ // detect the extenders
+ stmpe1600_exp0.read16bitReg(0x00, &ExpanderData);
+// if (ExpanderData != 0x1600) {/* log - failed to find expander exp0 */ }
+ stmpe1600_exp1.read16bitReg(0x00, &ExpanderData);
+// if (ExpanderData != 0x1600) {/* log - failed to find expander exp1 */ }
+
+ // configure all necessary GPIO pins as outputs
+ ExpanderData = 0xFFFF;
+ stmpe1600_exp0.write16bitReg(GPDR, &ExpanderData);
+ ExpanderData = 0xBFFF; // leave bit 14 as an input, for the pushbutton, PB1.
+ stmpe1600_exp1.write16bitReg(GPDR, &ExpanderData);
+
+ // shut down all segment and all device
+ ExpanderData = 0x7F + (0x7F << 7);
+ stmpe1600_exp0.write16bitReg(GPSR, &ExpanderData);
+ stmpe1600_exp1.write16bitReg(GPSR, &ExpanderData);
+ }
+
+ /*** Interface Methods ***/
+ /**
+ * @brief Print the string on display
+ * @param[in] String to be printed
+ * @param[in] String lenght [min 1, max 4]
+ * @return void
+ */
+ void DisplayString (const char *str)
+ {
+ uint16_t ExpanderData;
+ uint32_t Segments;
+ int BitPos;
+ int i;
+
+ for( i=0; i<4 && str[i]!=0; i++){
+ Segments = (uint32_t)ascii_to_display_lut[(uint8_t)str[i]];
+ Segments =(~Segments)&0x7F;
+ BitPos=DisplayBitPos[i];
+ CurIOVal.u32 &=~(0x7F<<BitPos);
+ CurIOVal.u32 |= Segments<<BitPos;
+ }
+ /* clear unused digit */
+ for( ; i<4;i++){
+ BitPos=DisplayBitPos[i];
+ CurIOVal.u32 |=0x7F<<BitPos;
+ }
+
+// stmpe1600_exp0.write16bitReg(GPSR, (uint16_t *)&CurIOVal.bytes[0]);
+// stmpe1600_exp1.write16bitReg(GPSR, (uint16_t *)&CurIOVal.bytes[2]);
+
+// ordered low-byte/high-byte!
+ ExpanderData = (CurIOVal.bytes[1] << 8) + CurIOVal.bytes[0];
+ stmpe1600_exp0.write16bitReg(GPSR, &ExpanderData);
+ CurIOVal.bytes[3] |= 0x80; // ensure highest bit is high, as this is xshutdown pin on central sensor!
+ ExpanderData = (CurIOVal.bytes[3] << 8) + CurIOVal.bytes[2];
+ stmpe1600_exp1.write16bitReg(GPSR, &ExpanderData);
+
+ }
+
+ void ClearDisplay(void)
+ {
+ uint16_t ExpanderData;
+
+ ExpanderData = 0x7F + (0x7F << 7);
+ stmpe1600_exp0.write16bitReg(GPSR, &ExpanderData);
+ stmpe1600_exp1.write16bitReg(GPSR, &ExpanderData);
+ }
+
+};
+
+#ifdef __cplusplus
+}
+#endif
+#endif // __DISPLAY_H
+