Add SPI(1) and I²C(1) on MSP430F5529

[rei-vilo]

The MSP430F5529 includes more than 1 SPI port and more than 1 I²C port.

As at today, Energia only implements SPI(0) and I²C(0).

• SPI(1) uses pins

MISO (1) on P4_2 or 9 MOSI (1) on P4_1 or 10 SCK (1) on P4_3 or 34 CS (1) on P4_0 or 33

• I²C(1) uses pins

SCL (1) on P4_2 or 9 SDA (1) on P4_1 or 10

[dd430]

In addition to enable this support, per the LaunchPad pin-out standard @ http://www.ti.com/ww/en/launchpad/img/launchpad-byob-pinout.png (that many existing and all future 'compliant' BP should follow), consider setting SPI(0) & I2C(1) as default communication option for F5529 LP board.

[alfh]

I'm trying to get the U2C(1), i.e. USCB_1 module to work on F5529 Launchpad.

The code is here https://github.com/alfh/Energia/tree/feature_i2c_uscb1, commit : https://github.com/alfh/Energia/commit/87946986d775f4fdd3894537497daa6136e5e167

It is not working yet. It is working for USCB0, but not for USCB1. I will write to the Energia forum for some help

[alfh]

I'm making progress on getting this to work, see http://forum.43oh.com/topic/5174-getting-i2c1-ie-usci-b1-to-work-on-f5529-launchpad/

I will commit more code to github shortly.

[alfh]

The code in https://github.com/alfh/Energia/tree/feature_i2c_uscb1 is now working for me, it allows me to use "Wire" for USCI_B0, and "Wire1" for USCI_B1. The code still needs clean up, and review, before I will make a pull request to merge the code.

[robertinant]

Awesome! I'll wait for the pull request so that we can review.

[rei-vilo]

Could you please provide an example?

I've downloaded and compiled your Energia fork and I'm trying to test the library.

With the following code for the MSP430F5529, #include "Wire.h", I have the following error when compiling

[/Users/ReiVilo/Desktop/Energia.app/Contents/Resources/Java/hardware/tools/msp430/bin/msp430-g++, -c, -g, -Os, -w, -ffunction-sections, -fdata-sections, -mmcu=msp430f5529, -DF_CPU=25000000L, -MMD, -DARDUINO=101, -DENERGIA=12, -I/Users/ReiVilo/Desktop/Energia.app/Contents/Resources/Java/hardware/msp430/cores/msp430, -I/Users/ReiVilo/Desktop/Energia.app/Contents/Resources/Java/hardware/msp430/variants/launchpad_f5529, /var/folders/5d/dky9xc691m32kztqnhkn8bhw0000gn/T/build8620168210632241345.tmp/F5529_two_I2C.cpp, -o, /var/folders/5d/dky9xc691m32kztqnhkn8bhw0000gn/T/build8620168210632241345.tmp/F5529_two_I²C.cpp.o]

In file included from F5529_two_I2C.ino:1:0:

/Users/ReiVilo/Desktop/Energia.app/Contents/Resources/Java/hardware/msp430/cores/msp430/Wire.h:36:2: error: 
#error "********** USI not available"

/Users/ReiVilo/Desktop/Energia.app/Contents/Resources/Java/hardware/msp430/cores/msp430/Wire.h:40:2: error: 
#error "********** USCI not available"

Thank you!

[rei-vilo]

Thank you for your answer on the 43oh forum.

Adding #include "Energia.h" solved the problem.

However, this pre-processing statement is optional, as the Energia IDE adds it automatically. So something goes wrong here.

I'm going to test my example now and keep you updated.

[rei-vilo]

I've tested Wire and Wire1 with a HMC6352 and everything runs fine.

Only remains the #include "Energia.h" statement that should remain automatic.

[alfh]

I've made pull request #398 for this, to get the process started on reviewing my changes.