| ??? 06/17/07 01:56 Modified: 06/17/07 01:59 Read: times |
#140894 - More detail is needed Responding to: ???'s previous message |
What is the second device you need to connect serially?
What baud rate speed's do you need to connect to the second device? What other functions does the LPC936 have to do? What is the application you are trying to do? please explain more. Comments 1. If the baud rate serial speed is low and the LPC936 is not doing much else (low resource usage) then a software UART may be ok. But as more resouces and speed is required then software UARTs tend to fall apart. Here's an example for an old Philips (NXP) 80c51 - note the LPC900 series has the same core but there are slight differences in the hardware. http://www.nxp.com/files/pro...upuart.zip This might give you some idea. 2. You could add another I2C / SPI to UART Bridge IC from NXP to handle all the second UART resources (warning - can be complicated for 1st time 80c51 - LPC936 users). Part No SC16IS750, 760 and others. http://www.standardics.nxp.com/products/bridges/ http://www.standardics.nxp.com/products/...idges/all/ Here's an app note http://www.standardics.nxp.com/support/d...n10452.pdf 3. Keil, You can download the 4k demo version from web site. Will your application fit in this? Keil is well documented and has a simulator and other features. Source code resourse http://www.codearchitect.org/ There are many IDEs/Compliers suitable and open source (Free SDCC). I like this one http://www.opcube.com/home.html it's free (open source). Joe |
| Topic | Author | Date |
| Need additional serial input on LPC936 | 01/01/70 00:00 | |
| More detail is needed | 01/01/70 00:00 | |
| Additional information | 01/01/70 00:00 | |
| Would this work? | 01/01/70 00:00 | |
| Switching Tx or Rx | 01/01/70 00:00 | |
| discovered: RX and Tx are different baud | 01/01/70 00:00 | |
| P89LPC952 has 2 UARTs | 01/01/70 00:00 | |
| At such baud rates you will get in serious trouble | 01/01/70 00:00 | |
| 30 days?? | 01/01/70 00:00 | |
| Have you considred SDCC? | 01/01/70 00:00 | |
| Choice of Tools | 01/01/70 00:00 | |
however, if you buy Keil | 01/01/70 00:00 |