Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
???
02/08/09 03:26
Read: times


 		 #162178 - Final answer and it works
Responding to: ???'s previous message
Per Westermark said:

long value = 1388;
digit1 = (value / 1000) + '0';
digit2 = ((value / 100) % 10) + '0';
digit3 = ((value / 10) % 10) + '0';
digit4 = (value % 10) + '0';


This is the hot ticket item that solved my problem. I understand now why it is being done, and I am able to convert a long hex value to decimal to convert to ASCII to use a fast lookup ASCII table.

Phew....that's a mouth full, but it appears to work just fine under simulation and should be fine in my project.....thanks again to all for your help. I pasted the final result below

Save filename.txt

code uchar DataLookup[] ={
0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D, 0x7D, 0x07, 0x7F, 0x67, 0x80, 0x80, 0x80, 0x80,
0x80, 0x80, 0x80, 0x77, 0x7C, 0x39, 0x5E, 0x79, 0x71, 0x6F, 0x76, 0x30, 0x0E, 0x80,
0x38, 0x80, 0x80, 0x5C, 0x73, 0x80, 0x80, 0x6D, 0x80, 0x3E, 0x80, 0x80, 0x80, 0x80,
0x80};

uchar D6,D5,D4,D3,D2,D1,D0;
I2C_Data_Array[0] = Count[0];
D0 = (( I2C_Data_Array[0] / 1000000)      + '0') - 0x30;
D1 = (((I2C_Data_Array[0] / 100000) % 10) + '0') - 0x30;
D2 = (((I2C_Data_Array[0] / 10000)  % 10) + '0') - 0x30; 
D3 = (((I2C_Data_Array[0] / 1000)   % 10) + '0') - 0x30;
D4 = (((I2C_Data_Array[0] / 100)    % 10) + '0') - 0x30; 
D5 = (((I2C_Data_Array[0] / 10)     % 10) + '0') - 0x30; 
D6 = (( I2C_Data_Array[0]           % 10) + '0') - 0x30;
transmit_bytes[6] = DataLookup[D6];
transmit_bytes[5] = DataLookup[D5];
transmit_bytes[4] = DataLookup[D4];
transmit_bytes[3] = DataLookup[D3];
transmit_bytes[2] = DataLookup[D2];
transmit_bytes[1] = DataLookup[D1];
transmit_bytes[0] = DataLookup[D0];
MAX_NUMBYTE_TX[0] = 6; //Send 7 Bytes of data
i2c_init(0x20, 0); //Set to master with address of 0x20, no general call
i2c_transmit(device_address);
while (i2c_getstatus() & I2C_BUSY);	// wait until complete

 


Regards,
Chris




List of 12 messages in thread
TopicAuthorDate
Looking for a fast elegant solution to an SAA1064            01/01/70 00:00      
   several ways            01/01/70 00:00      
   Simple Table Lookup            01/01/70 00:00      
      Constructing the table symbolically            01/01/70 00:00      
      That looks like it will do the trick            01/01/70 00:00      
      Ok I'm here now.......            01/01/70 00:00      
         first convert to decimal, then to ASCII            01/01/70 00:00      
            So...            01/01/70 00:00      
               Keep track of binary/BCD/hex/ASCII            01/01/70 00:00      
                  Final answer and it works            01/01/70 00:00      
                     But '0' - 0x30 is zero :)            01/01/70 00:00      
               not exactly            01/01/70 00:00      

Back to Subject List