为支持LaunchPad活动,我这个万年潜水者也来发帖了。
MSP-EXP430G2
LaunchPad features:
• USB debugging and
programming interface featuring a driverless installation and application UART
serial communication with up to 9600 Baud
板上的串口转 usb 最多只能到9600的波特率
3、仿真连接:
The
power supply and the Spy-Bi-Wire JTAG signals TEST and RST must be connected with jumper J3 to allow the onboard
emulation connection to the device.
Jtag看来只需要TEST 和 RST两个接口,要断开仿真只需断开这两个跳线
4、
The jumper 5 VCC also must be opened if the LaunchPad
board is powered with an external power supply over J6. 如果在J6接外部电源,J3 Jumper 5的VCC必须断开
5、
Table 1. Jumper
Connection J3 Between Emulator and Target
Jumper
|
Signal
|
Description
|
1
|
TEST
|
Test mode for JTAG
pins / Spy-Bi-Wire test clock input during
programming and test
|
2
|
RST
|
Reset /
Spy-Bi-Wire test data input/output during
programming and test
|
3
|
RXD
|
UART receive data
input
|
4
|
TXD
|
UART transmit data
output
|
5
|
VCC
|
Target socket
power supply voltage (power consumption test jumper)
|
可通过5脚来用电流表测整个板(包括外设)的耗电量
6、J4
这里的TXD与板上的MSP430的RXD相连接,RXD与TXD相连,所以要是有eZ430可不用管什么跳线,它们的串口直接就可以通信了。而TEST和RET脚则是直接与模拟器相连,不用跳线。
7、
The
signal lines XIN and XOUT can also
be used as multipurpose I/Os or as a digital frequency input.
8、It should be noted that there are two 0
ohms resistors (R28 and R29) that extend the crystal pin leads to the
single-in-line break out connector (J2). In case of oscillator signal
distortion which leads to a fault indication at the basic clock module, these
resistors can be used to disconnect connector J2 from the oscillating lines.
R28和R29 0欧,可移除以断开与J2的连接
以上从 MSP-EXP430G2 LaunchPad Experimenter Board User's Guide.pdf (Literature Number: SLAU318)里面摘录,这些我认为比较重要的。