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  1. SPI provides different speeds on LaunchPad and StellarPad for Energia: #if defined(__MSP430G2553__) SPI.begin(); SPI.setClockDivider(SPI_CLOCK_DIV2); // for MSP430G2553 DIV2 = 8 MHz #elif defined(__LM4F120H5QR__) SPI.begin(2); SPI.setClockDivider(SPI_CLOCK_DIV2); // for LM4F120H5QR DIV2 = 4 MHz ! #endif Please find the traces with my just-purchased oscilloscope thanks to http://embeddedcomputing.weebly.com/2/post/2012/11/oscilloscope-target-reached.html'>contributions I've received! Left: MSP430G2253 = 8 MHz; Right: LM4F210H5QR = 4 MHz Line 119 of Energ
  2. I'm attempting to talk to a digipot over SPI with energia. The pot in question is a microchip mcp4261 (http://ww1.microchip...eDoc/22059b.pdf). To communicate with it, you pull the CS pin active (low), send it a 2 byte command then pull the CS pin back high. Without quoting the entire the data sheet, the basic command sequence is a 4 bit register address, 2 bit command, and 9 data bits. When you issue the read command, it is supposed to return 9 bits of data (the value of the register). I've bread boarded this up using the SPI examples with the following layout: CS -> P2.0
  3. Hello! My library for interacting an MSP430g2553 with a TM1638 (SPI 3-wire mode) Description MSP430G2xx3 - USCI_A0 SPI Master Interface to TM1638, Read/Write command, key scanning, show digit and switch LEDs on board. TM1638 - Driver for Led's indicator, 10 segment output lines, 8 grid output lines, 8 segment/key - 3 lines scanning. Features Support for the TM1638; Support for dimming the display and LEDs; Reading simultaneous button presses Connection diagramm: Code: #include "msp430g2553.h" // MSP430 Ports Define #define LED_RED BIT0 //RED Led #define LED_GRE BIT6 //Green Led #def
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