MSP430, CCS, I2C, PCF8563

MSP430, CCS, I2C, PCF8563

※ msp430.h 를 사용하는 소스입니다.

i2c interface 방식과 gpio 방식 2가지로 동작을 확인하였습니다.

Did you have a look at the example codes for the MCU that is provided by TI for almost every processor?

www.ti.com/lit/zip/slac536

The following examples show how to set up the clocks:

msp430fr59xx_cs_01.c       Configure MCLK for 8MHz operation
msp430fr59xx_cs_02.c       Configure MCLK for 16MHz operation
msp430fr59xx_cs_03.c       Output 32768Hz crystal on XT1 and observe failsafe
msp430fr59xx_cs_04.c       ACLK = XT1 = 32768Hz, SMCLK= XT2 = 8MHz, MCLK = DCO
msp430fr59xx_cs_05.c       Using LFXT in bypass mode, failsafe operation shown

0. 참고 사항

• C:\ti\msp\MSP430Ware_3_80_04_05\examples\devices\MSP430FR5xx_6xx\MSP430FR5x8x_MSP430FR692x_MSP430FR6x7x_MSP430FR6x8x_Code_Examples\C
  
• http://e2e.ti.com/support/microcontrollers/msp430/f/166/p/368560/1297094
• https://github.com/achopra6/MSP430FR6989/blob/master/timer.c
• http://www.ti.com/lit/ds/symlink/msp430fr6989.pdf
• http://www.ti.com/lit/ug/slau367o/slau367o.pdf

출처: http://coyoteugly.tistory.com/188 [마이콤 개발자를 위한 여행]

0. 참고 사항

• [MSP430Ware] / msp430fr69xx_eusci_i2c_standard_master.c
  
• [i2c_sw.c] / https://gist.github.com/ksvbka/fec1f28ce40c276334fb
  
• [MSP430Ware] / www.ti.com/lit/zip/slac536
  
• [MSP430FR6989 LaunchPad™ Development Kit] / http://www.ti.com/lit/ug/slau627a/slau627a.pdf
  
• [MSP430FR6989 DataSheet] / http://www.ti.com/lit/ds/symlink/msp430fr6989.pdf
• [MSP430FR6xx User's Guide] / http://www.ti.com/lit/ug/slau367o/slau367o.pdf

1. HW 구성

2. 소스 설명

full 소스는 아래 github를 통해 확인하세요.

working with i2c gpio control
msp430fr6989 development kit backchannel (uart)
use USCI_A1
    - P3.5 : UCA1RXD
    - P3.4 : UCA1TXD
    - BaudRate : 115200

i2c_interface.h #define USE_I2C_INTERFACE i2c_gpio.h // #define USE_I2C_GPIO

주소 설정은 다음과 같이 해야합니다.

interface 내부적으로 shift 작업과 R/W bit 작업을 합니다.

slave address = 1010 001x = A2 or A3
write addr : 0x51 (A2 >> 1)
read addr : 0x51 (A2 >> 1)

3. 소스

• https://github.com/sglee0223/msp430/tree/master/pcf8563_i2c
  

4. 결과