Diff: UniGraphic/Protocols/FSMC8.cpp

Revision:

0:fa952828e34c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/UniGraphic/Protocols/FSMC8.cpp	Sun May 10 10:44:31 2020 +0000
@@ -0,0 +1,230 @@
+#include "FSMC8.h"
+#include "stdint.h"
+
+// Addres bit A18 is used to select LCD's REGISTER or RAM: A18 = 0b00000000000001000000000000000000 = 0x00040000
+volatile unsigned char* lcd_reg = (unsigned char*)0x60000000;   // FSMC BANK1, A18 = 0 -> write to LCD's REGISTER
+volatile unsigned char* lcd_ram = (unsigned char*)0x60040000;   // FSMC BANK1, A18 = 1 -> read/write to LCD's RAM
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+FSMC8::FSMC8(PinName reset) :
+    _reset(reset)
+{
+    _reset = 1;
+}
+
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void FSMC8::wr_cmd8(unsigned char cmd)
+{
+    lcd_reg[0] = cmd;   // Write to LCD's register
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void FSMC8::wr_data8(unsigned char data)
+{
+    lcd_ram[0] = data;  // Write to LCD's RAM
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void FSMC8::wr_cmd16(unsigned short cmd)
+{
+    wr_cmd8(cmd >> 8);      // Write MSB to LCD's register
+    wr_cmd8(cmd & 0xFF);    // Write LSB to LCD's register
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void FSMC8::wr_data16(unsigned short data)
+{
+    wr_data8(data >> 8);    // Write MSB to LCD's RAM
+    wr_data8(data & 0xFF);  // Write LSB to LCD's RAM
+
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void FSMC8::wr_gram(unsigned short data)
+{
+    wr_data16(data);
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void FSMC8::wr_gram(unsigned short data, unsigned int count)
+{
+    if ((data >> 8) == (data & 0xFF)) {
+        count <<= 1;
+        while (count) {
+            wr_data8(data);
+            count--;
+        }
+    }
+    else {
+        while (count) {
+            wr_data16(data);
+            count--;
+        }
+    }
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void FSMC8::wr_grambuf(unsigned short* data, unsigned int lenght)
+{
+    while (lenght) {
+        wr_data16(*data++);
+        lenght--;
+    }
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+unsigned char FSMC8::rd_data8(unsigned int i /* = 0 */)
+{
+    return lcd_ram[i];  // Read from LCD's RAM
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+unsigned short FSMC8::rd_gram(bool convert)
+{
+    unsigned int    r = 0;
+
+    rd_data8(); // dummy read
+    r |= rd_data8();
+    r <<= 8;
+    r |= rd_data8();
+
+    if (convert) {
+        r <<= 8;
+        r |= rd_data8();
+
+        // gram is 18bit/pixel, if you set 16bit/pixel (cmd 3A), during writing the 16bits are expanded to 18bit
+        // during reading, you read the raw 18bit gram
+        r = RGB24to16((r & 0xFF0000) >> 16, (r & 0xFF00) >> 8, r & 0xFF);   // 18bit pixel padded to 24bits, rrrrrr00_gggggg00_bbbbbb00, converted to 16bit
+    }
+
+    //    _bus.output();
+    return (unsigned short)r;
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+unsigned int FSMC8::rd_reg_data32(unsigned char reg)
+{
+    unsigned char  data[4] = { 0 };
+    unsigned int*  r = (unsigned int*)&data[0];
+
+    wr_cmd8(reg);
+    data[3] = rd_data8(0);
+    data[2] = rd_data8(0);
+    data[1] = rd_data8(0);
+    data[0] = rd_data8(0);
+
+    return *r;
+}
+
+// in Par mode EXTC regs (0xB0-0xFF) can be directly read
+unsigned int FSMC8::rd_extcreg_data32(unsigned char reg, unsigned char SPIreadenablecmd)
+{
+    return rd_reg_data32(reg);
+}
+
+// ILI932x specific
+void FSMC8::dummyread()
+{
+    rd_data8(); // dummy read
+}
+
+// ILI932x specific
+void FSMC8::reg_select(unsigned char reg, bool forread)
+{
+    wr_cmd8(0);     // write MSB
+    wr_cmd8(reg);   // write LSB
+}
+
+// ILI932x specific
+void FSMC8::reg_write(unsigned char reg, unsigned short data)
+{
+    wr_cmd8(0);     // write MSB
+    wr_cmd8(reg);   // write LSB
+    wr_data16(data);
+}
+
+// ILI932x specific
+unsigned short FSMC8::reg_read(unsigned char reg)
+{
+    unsigned short  r = 0;
+
+    wr_cmd8(0);
+    wr_cmd8(reg);
+    r |= rd_data8() & 0xFF;
+    r <<= 8;
+    r |= rd_data8() & 0xFF;
+
+    return r;
+}
+
+/**
+ * @brief
+ * @note
+ * @param
+ * @retval
+ */
+void FSMC8::hw_reset()
+{
+    _reset = 1;
+    wait_ms(15);
+    _reset = 0; // display reset
+    wait_ms(2);
+    _reset = 1; // end reset
+    wait_ms(100);
+}