Diff: MySeeedStudioTFTv2.cpp

Revision:

0:583a42b8d940

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MySeeedStudioTFTv2.cpp	Sat Aug 15 08:45:28 2015 +0000
@@ -0,0 +1,140 @@
+/* mbed library for resistive touch pads
+ * uses 4 pins - 2 IO and 2 Analog
+
+ * c 2011 Peter Drescher - DC2PD
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+#include "mbed.h"
+#include "MySeeedStudioTFTv2.h"
+
+#define TFT_DEBUG
+
+#ifdef TFT_DEBUG
+extern Serial uart;
+#endif
+
+
+MySeeedStudioTFTv2::MySeeedStudioTFTv2(PinName xp, PinName xm, PinName yp, PinName ym,
+                     PinName mosi, PinName miso, PinName sclk,
+                     PinName csTft, PinName dcTft, PinName blTft,
+                     PinName csSd) : SeeedStudioTFTv2(xp,xm,yp,ym,mosi,miso,sclk,csTft,dcTft,blTft,csSd)
+{
+    SeeedStudioTFTv2::SPI_TFT_ILI9341::_spi.frequency(18000000);
+    SeeedStudioTFTv2::SDFileSystem::_spi.frequency(24000000);     
+}
+
+int MySeeedStudioTFTv2::DrawBitmapFile(FILE * fp)
+{
+   
+    char img[3*240];
+    uint32_t imgsize = 0;
+    uint32_t offset = 0;
+    uint32_t imgw = 0;
+    uint32_t imgh = 0;
+    char colbits = 0;
+    char compress = 0;
+    uint16_t col;
+
+    int i, j;
+ 
+    if(fp == NULL) return -1;
+    if(fgetc(fp) != 0x42) return -2;
+    if(fgetc(fp) != 0x4D) return -2;
+
+    for(i = 0; i < 4; i++)
+    {
+        imgsize += (((uint32_t)fgetc(fp)) << i*8);
+    }
+#ifdef TFT_DEBUG
+    uart.printf("BMP SIZE:%d\r\n",imgsize);
+#endif
+    fseek(fp,4,SEEK_CUR);
+    for(i = 0; i < 4; i++)
+    {
+        offset += (((uint32_t)fgetc(fp)) << i*8);
+    }
+#ifdef TFT_DEBUG    
+    uart.printf("BMP OFFSET:%d\r\n",offset);
+#endif
+    fseek(fp,4,SEEK_CUR);
+    for(i = 0; i < 4; i++)
+    {
+        imgw += (((uint32_t)fgetc(fp)) << i*8);
+    }
+    if(imgw > 240) return -3;
+    
+    for(i = 0; i < 4; i++)
+    {
+        imgh += (((uint32_t)fgetc(fp)) << i*8);
+    }
+    if(imgh > 320) return -3;
+    
+    fseek(fp,2,SEEK_CUR);
+    colbits = fgetc(fp);
+    //if(colbits != 16 || colbits != 24) return -4;
+    fgetc(fp);
+    if((compress=fgetc(fp)) != 0)
+    {
+    #ifdef TFT_DEBUG    
+        uart.printf("Not supported compress : %d\r\n",compress);
+    #endif
+        return -4;    
+    }
+    
+
+#ifdef TFT_DEBUG    
+    uart.printf("RESOL : %d col, %d X %d",colbits,imgw,imgh);
+#endif    
+    
+    fseek(fp, offset, SEEK_SET);
+    for (j = imgh-1; j >= 0; j--)        //Lines
+    {  
+        fread(img,sizeof(char),imgw*3,fp);
+        window(0, j, imgw, 1);    
+        wr_cmd(0x2C);  // send pixel
+    #ifndef TARGET_KL25Z  // 16 Bit SPI 
+        SeeedStudioTFTv2::SPI_TFT_ILI9341::_spi.format(16,3);
+    #endif                            // switch to 16 bit Mode 3
+
+        for(i = 0; i < imgw; i++)
+        {
+/*            if(colbits == 16)
+            {
+                col = (uint16_t)img[2*i+1];
+                col <<= 8;
+                col += (uint16_t)img[2*i];
+            }
+            else if(colbits == 24) */
+            {
+                col = RGB((uint16_t)img[3*i+2],(uint16_t)img[3*i+1], (uint16_t)img[3*i]);
+            }
+        #ifdef TFT_DEBUG    
+            //uart.printf("RGB(%d): (%d,%d,%d) -> %04X\r\n ",i,img[3*i+2],img[3*i+1],img[3*i],col);
+        #endif    
+
+        #ifdef TAGET_KL25Z
+            SeeedStudioTFTv2::SPI_TFT_ILI9341::_spi.write((char)(col>>8));
+            SeeedStudioTFTv2::SPI_TFT_ILI9341::_spi.write((char)col);
+        #else
+           SeeedStudioTFTv2::SPI_TFT_ILI9341::_spi.write(col);
+        #endif
+        }
+        SeeedStudioTFTv2::SPI_TFT_ILI9341::_cs = 1;
+        #ifndef TARGET_KL25Z  // 16 Bit SPI 
+            SeeedStudioTFTv2::SPI_TFT_ILI9341::_spi.format(8,3);
+        #endif
+ 
+    }
+    WindowMax();
+    
+    return 0;
+}
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