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Diffstat (limited to 'components/tv-encoder/CH7024.c')
| -rw-r--r-- | components/tv-encoder/CH7024.c | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/components/tv-encoder/CH7024.c b/components/tv-encoder/CH7024.c new file mode 100644 index 0000000..4e7c45c --- /dev/null +++ b/components/tv-encoder/CH7024.c @@ -0,0 +1,292 @@ +/* ----------------------------------------------------------------------------
+ * ATMEL Microcontroller Software Support
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * DISCLAIMED. IN NO EVENT SHALL ATMEL 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.
+ * ----------------------------------------------------------------------------
+ */
+
+//-----------------------------------------------------------------------------
+// Headers
+//-----------------------------------------------------------------------------
+#include <drivers/twi/twid.h>
+#include <utility/trace.h>
+#include "CH7024.h"
+
+/// Slave address of Chrontel CH7024 chip.
+#define CH7024_ADDRESS 0x76
+
+/// terminating list entry for register in configuration file
+#define CH7024_REG_TERM 0xFF
+/// terminating list entry for value in configuration file
+#define CH7024_VAL_TERM 0xFF
+
+/// CH7024 register configure value
+const struct ch7024_reg ch7024_config[]= {
+ //POWER ON&DAC OFF
+ {0x04,0x0C}, // Power Management: DAC1 and DAC2 are power down
+
+ //HUE
+ {0x05,0x30}, // adjust hue setting of the image
+ //SATURATION
+ {0x06,0x30}, // adjust the color saturation of the image
+ //CONTRAST
+ {0x07,0x48}, // adjust the contrast level of the image
+ //BRIGHTNESS
+ {0x08,0x80}, // adjusts the brightness level of the image
+ //SHARPNESS
+ {0x09,0x04}, // control the sharpness adjustment of the image
+
+ {0x0B,0x04}, // Crystal Register: 4: 13MHz
+ {0x0C,0x00}, // Outputs are not dual CVBS
+
+ //RGB888
+ {0x0D,0x00}, // IDF[2:0] (bits 2-0) define the input data format
+
+ //SLAVE
+ {0x0E,0x0C}, // SYNC Control: Horizontal and vertical polarity are positive
+
+ {0x0F,0x00}, // auxiliary bit to help latch input data correctly
+ //{0x10, 0x01}, // TV Adaptive Flicker Filter Control
+
+ //output setting
+ {0x1E,0x05}, // Horizontal Scaling
+ {0x1F,0x00}, // Horizontal Scaling
+ {0x20,0x00}, // TV vertical position adjustment
+ {0x21,0x81}, // TV vertical position adjustment
+ {0x22,0x00}, // TV horizontal position adjustment
+ {0x23,0x76}, // TV horizontal position adjustment
+
+ //REG[34]TO[37] will be use to
+ //set calculate the sub-carrier frequency
+ {0x1C,0x90}, // Disables Dot Crawl reduction
+
+ //NTSC_M
+ {0x0A,0x10},
+ //HTI=1002=720+; (LCDC)1002=07+250+720+25
+ {0x11,0x1A}, // Input Horizontal Total Pixels //HT[10][9][8]HA[10][9][8]
+ {0x12,0xD0}, // Input Horizontal Active Pixels //HA(0x2D0)
+ {0x13,0xEA}, // Input Horizontal Total Pixels //HT(0x3EA)
+ {0x14,0x00}, // Input Horizontal Sync Offset
+ {0x15,0x19}, // Input Horizontal Sync Offset //HO
+ {0x16,0x07}, // Input Horizontal Sync Offset //HW
+
+ //VTI=555=480+ ; (LCDC)VW=08 555=70+480+05
+ {0x17,0x09}, // Input Vertical Active Pixels + Input Vertical Sync Offset //VT[9][8]VA[9][8]
+ {0x18,0xE0}, // Input Vertical Active Pixels //VA(0X1E0)
+ {0x19,0x2B}, // VTI //VTI(0X22B)
+ {0x1A,0x05}, // Input Vertical Sync Offset //VO
+ {0x1B,0x08}, // Input Vertical Sync Offset //VW
+
+ //PLL ratio R1,R2,R3,R4,R5
+ {0x30,0x1B},
+ {0x31,0x12},
+
+ //P
+ {0x28,0x00},
+ {0x29,0xAB},
+ {0x2A,0x90},
+
+ //N
+ {0x2B,0x36},
+ {0x2C,0xFC},
+ {0x2D,0x90},
+
+ //T
+ {0x2E,0x4F},
+
+ //sub carrier frequency r1-r4
+ {0x34,0x01}, // SCFREQ[26:0], the Sub-carrier Frequency Value
+ {0x35,0x19}, // SCFREQ[26:0], the Sub-carrier Frequency Value
+ {0x36,0xF5}, // SCFREQ[26:0], the Sub-carrier Frequency Value
+ {0x37,0x8D}, // SCFREQ[26:0], the Sub-carrier Frequency Value
+
+ //enable test mode
+ //{0x02,0x01},
+ //{0x04,0x44},
+ //{0x02,0x00},
+
+ //POWER ON&DAC ON
+ {0x04,0x00},
+
+ //register end
+ {0xFF,0xFF}
+};
+
+//-----------------------------------------------------------------------------
+// Local Functions
+//-----------------------------------------------------------------------------
+
+//-----------------------------------------------------------------------------
+// Global Functions
+//-----------------------------------------------------------------------------
+
+//-----------------------------------------------------------------------------
+/// Read a value from a register in an CH7024 device.
+/// \param pTwid TWI interface
+/// \param reg Register to be read
+/// \param pData Data read
+/// \return 0 if no error, otherwize TWID_ERROR_BUSY
+//-----------------------------------------------------------------------------
+unsigned char ch7024_read_reg(Twid *pTwid, unsigned char reg, unsigned char *pData)
+{
+ unsigned char status;
+
+ status = TWID_Read( pTwid, CH7024_ADDRESS, reg, 1, pData, 1, 0);
+ if( status != 0 ) {
+ TRACE_INFO("ch7023_read_reg pb");
+ }
+ return status;
+}
+
+//-----------------------------------------------------------------------------
+/// Write a value to a register in an CH7024 device.
+/// \param pTwid TWI interface
+/// \param reg Register to be write
+/// \param val Value to be writte
+/// \return 0 if no error, otherwize TWID_ERROR_BUSY
+//-----------------------------------------------------------------------------
+unsigned char ch7024_write_reg(Twid *pTwid, unsigned char reg, unsigned char val)
+{
+ unsigned char status = 0;
+
+ status = TWID_Write(pTwid, CH7024_ADDRESS, reg, 1, &val, 1, 0);
+ if( status != 0 ) {
+ TRACE_INFO("ch7024_write_reg pb");
+ }
+ return status;
+}
+
+//-----------------------------------------------------------------------------
+/// Sequence For correct operation of the TV encoder
+/// Following the steps below to identify CH7023/CH7024 chip.
+/// Step 1: Read the value of register 0x00;
+/// If value is 0x45, CH7023/CH7024 is present.
+/// Other value, none of CH7023/CH7024 is present;
+/// Step 2: Write '1' to bit 1 of register 0x40(set 0x40[1]=1) and read back;
+/// If the bit is '0' the chip present is CH7024;
+/// Else the bit is '1' the chip present is CH7023.
+///
+/// \param pTwid TWI interface
+/// \return 1 if initialization ok, otherwise 0
+//-----------------------------------------------------------------------------
+unsigned char ch7024_init(Twid *pTwid)
+{
+ unsigned char id=0;
+
+ // Device ID Register [0x00]
+ if( 0 == ch7024_read_reg(pTwid, 0x00, &id) ) {
+ TRACE_DEBUG("[0x00]= 0x%X\n\r", id);
+ if( id == 0x45 ) {
+ TRACE_INFO("TV encoder detected!\n\r");
+ return 1;
+ }
+ else {
+ TRACE_INFO("Problem captor: bad PID\n\r");
+ }
+ }
+ else {
+ TRACE_INFO("Problem: TV encoder not responding\n\r");
+ }
+ return 0;
+}
+
+//-----------------------------------------------------------------------------
+/// Initialize a list of ch7024 registers.
+/// The list of registers is terminated by the pair of values
+/// { CH7024_REG_TERM, CH7024_VAL_TERM }.
+/// Returns zero if successful, or non-zero otherwise.
+/// \param pTwid TWI interface
+/// \param pReglist Register list to be written
+/// \return 0 if no error, otherwize TWID_ERROR_BUSY
+//-----------------------------------------------------------------------------
+int ch7024_write_regs(Twid *pTwid, const struct ch7024_reg* pReglist)
+{
+ int err;
+ int size=0;
+ const struct ch7024_reg *pNext = pReglist;
+ unsigned int i=0;
+
+ TRACE_DEBUG("ch7024_write_regs:");
+ while (!((pNext->reg == CH7024_REG_TERM) && (pNext->val == CH7024_VAL_TERM))) {
+ err = ch7024_write_reg(pTwid, pNext->reg, pNext->val);
+ TRACE_DEBUG("+(%d) ", size);
+ size++;
+
+ //delay
+ for(i=0; i<6000; i++ );
+
+ if (err == TWID_ERROR_BUSY){
+ TRACE_INFO("-\n\rE- ch7024_write_regs: TWI ERROR\n\r");
+ return err;
+ }
+ pNext++;
+ }
+ TRACE_DEBUG("\n\r");
+ return 0;
+}
+
+//-----------------------------------------------------------------------------
+/// Configure the CH7024
+//-----------------------------------------------------------------------------
+void ch7024_configure(Twid *pTwid)
+{
+ const struct ch7024_reg *reg_conf;
+ reg_conf = ch7024_config;
+ TRACE_INFO("TV encoder configure\n\r");
+ ch7024_write_regs(pTwid, reg_conf);
+}
+
+//-----------------------------------------------------------------------------
+/// Reset the CH7024
+//-----------------------------------------------------------------------------
+void ch7024_reset(Twid *pTwid)
+{
+ int i;
+ TRACE_INFO("TV encoder reset\n\r");
+ ch7024_write_reg(pTwid, 0x03, 0x00);
+ for(i=0;i<10000;i++);
+ ch7024_write_reg(pTwid, 0x03, 0x03);
+}
+
+//-----------------------------------------------------------------------------
+/// Dump all register
+/// \param pTwid TWI interface
+//-----------------------------------------------------------------------------
+void ch7024_DumpRegisters(Twid *pTwid)
+{
+ int i;
+ unsigned char value;
+
+ TRACE_INFO("Dump all TV encoder register\n\r");
+ for(i = 0; i <= 0x7F; i++) {
+ value = 0;
+ ch7024_read_reg(pTwid, i, &value);
+ TRACE_INFO("[0x%02x]=0x%02x ", i, value);
+ if( ((i+1)%5) == 0 ) {
+ TRACE_INFO("\n\r");
+ }
+ }
+ TRACE_INFO("\n\r");
+}
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