ARM24xx
Discussion in "ARM Development" started by diana1234 May 28, 2015.
Thu May 28 2015, 04:45 pm
Hello there,
I am using a MCU LPC2468/78 and in its datasheet or user manual i noticed that some of chip functions are also repeated at some other pins of MCU, for example
P0[0]/RD1/TXD3/SDA1 , P0[1]/TD1/RXD3/SCL1 and
P0[25]/AD0[2]/I2SRX_SDA/TXD3 , P0[26]/AD0[3]/AOUT/RXD3 and
P4[28]/BLS2/MAT2[0]/TXD3 , P4[29]/BLS3/MAT2[1]/RXD3
In the above three different port pins there is repeated TXD3 fucnction and in the other 3 pairs there is repeated RXD3 function.
Please tell is these are different functions or the same fuction which i can use from any one of above 3 port pins.
In my understanding, i am assuming it as -
If a programmer is using I2C function from pins P0[0] and P0[1] then UART3 function is restricted to him from that pair of pins, in that case he can use the UART3 function from the remaining 2 pair of port pins.
Am I right or wrong?
Please give some light on this topic!
Thank you
I am using a MCU LPC2468/78 and in its datasheet or user manual i noticed that some of chip functions are also repeated at some other pins of MCU, for example
P0[0]/RD1/TXD3/SDA1 , P0[1]/TD1/RXD3/SCL1 and
P0[25]/AD0[2]/I2SRX_SDA/TXD3 , P0[26]/AD0[3]/AOUT/RXD3 and
P4[28]/BLS2/MAT2[0]/TXD3 , P4[29]/BLS3/MAT2[1]/RXD3
In the above three different port pins there is repeated TXD3 fucnction and in the other 3 pairs there is repeated RXD3 function.
Please tell is these are different functions or the same fuction which i can use from any one of above 3 port pins.
In my understanding, i am assuming it as -
If a programmer is using I2C function from pins P0[0] and P0[1] then UART3 function is restricted to him from that pair of pins, in that case he can use the UART3 function from the remaining 2 pair of port pins.
Am I right or wrong?
Please give some light on this topic!
Thank you
Sat May 30 2015, 02:26 am
P0[0]/RD1/TXD3/SDA1 , P0[1]/TD1/RXD3/SCL1 and
P0[25]/AD0[2]/I2SRX_SDA/TXD3 , P0[26]/AD0[3]/AOUT/RXD3 and
P4[28]/BLS2/MAT2[0]/TXD3 , P4[29]/BLS3/MAT2[1]/RXD3
In the above three different port pins there is repeated TXD3 function and in the other 3 pairs there is repeated RXD3 function.
Please tell is these are different functions or the same function.diana1234
As you say,these are the same functions available
from any one of above 3 port pins.
If a programmer is using I2C function from pins P0[0] and P0[1] then UART3 function is restricted to him from that pair of pins, in that case he can use the UART3 function from the remaining 2 pair of port pins.
Am I right or wrong?diana1234
I would say you are right.
diana1234 like this.
Sat May 30 2015, 05:10 pm
Thank you ExperimentarUK
Also please tell me how i can measure current flowing in any one of the load portion of the circuit(if there are diferent loads in the circuit) thrugh an ADC chennel.
If through a sensing resister, then how and where i can introduce that resister in the circuit.
Thank you once again
Also please tell me how i can measure current flowing in any one of the load portion of the circuit(if there are diferent loads in the circuit) thrugh an ADC chennel.
If through a sensing resister, then how and where i can introduce that resister in the circuit.
Thank you once again
Wed Jun 03 2015, 02:00 am
If through a sensing resister, then how and where i can introduce that resister in the circuit.diana1234
That depends on the circuit.
You will have to post your circuit.
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