I am new to MSP430F2132 UART. How can start understanding it. let me know if somebody knows reference app notes.
Also i want to do communication between ST micro micro-controller and TI MSP430. Please tell me the starting point.
The 1232 has an USCI module. How it works is described in the 2x family users guide, "universal serial communications contreoller - UART mode" chapter.Demo code should be available from the MSPs product page.
There are also many threads about serial connections in this forum.
abhishek SabnisAlso I want to do communication between ST micro micro-controller and TI MSP430. Please tell me the starting point.
Your question is like standing in the middle of a large market place, shouting 'I want to eat! What shall I buy?"
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Thanks jens for your reply.
As far as communication between ST micro and TI msp430 i want to do it through UART. hence, if some one have app notes on communication of msp430 to other micro through UART let me know.
abhishek Sabnis if some one have app notes on communication of msp430 to other micro through UART let me know.
There's an appnot ont eh Ti website abotu interfacing 5V peripherals with an MSP. Usually, MSP outputs to 5V inputs don't require special attention (as long as the MSPs VCC is above the other side's high threshold - see datasheets). 5V outputs to MSP inputs can be handled in three ways. First using a dedicated voltage level shifter. There ar elots of logic ICs wiht two supply voltages, separate for input and output side.Second is a diode and a pullup on the MSP side of the diode. So the pullup will pull the input voltage to MSPs VCC, while the 5V peripheral can only pull it low. You'll need a schottky diode, so you won't have too much voltage drop above VSS/GND then.Third method is a simpel series resistor that keeps the current low. All MSP port pins have internal clamp diodes which route over/undervoltages to VCC/VSS. The current must not exceed 2mA, So in case of MSP-VCC of 3V, the maximum overvoltage is 5V-3V=2V and a resistor >1k will keep the clamp current below maximum. 4.7k would be a good value.The cheaper the method is, the more current it wastes for the signal conversion. :)
For using (programming) an UART, there are many threads in thsi forum, and also demo codes which are linked form the MSP product page.
So to start with playing on UART with no external hardware. how can check i have correct firmware and my TX and RX is working? Can i use my computer to send and receive commands? if yes then how?
abhishek Sabnishow can check i have correct firmware and my TX and RX is working?
abhishek SabnisCan i use my computer to send and receive commands? if yes then how?
On the PC side you can use a terminal program such as the HyperTerm (included in windows up to XP), Putty or any other. Just select the COM port (in case of an USB converter, the virtual COM port provided by the converter driver) and select the same baudrate and communication parameters (data bits, stop bits) as on the MSP (and disable hardware and software handshake).
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