Other Parts Discussed in Thread: MSP430FR2433, MSP430WARE, MSP430F5659, MSP430FR5972
HI Guy
I have some problem with I2cbus of MSp430fr2476
I just using this routine on other Msp and don't have any problem, also I have aplly the Spi
and other peripheral without any problem
1) If I check the basic configuration after reset and before that I configure the I2cbus the bit UCMM into the UCB1CTLW0 is always at 1 ( Multiple-master environment) and not like
on the manual at 0 (Single master environment) , ok no problem I reset this bit with firmware.
2) this is my configuration
bisx.b #UCSWRST,UCB1CTL1
bicx.b #UCMM,UCB1CTLW0
bisx.w #(UCMODE_3+UCMST),UCB1CTLW0 ;* mode=I2c , master mode, sync mode, SMCLK clock source
movx.w #128,UCB1BRW ;*
bisx.b #(SCL+SDA),P4SEL0 ;* i2c on the port 4
bisx.w #(UCASTP0+UCASTP1),UCB1CTLW1 ;*have try with and without this istruction but not change, this istraction is present in other foirmware
bicx.b #UCSWRST,UCB1CTL1
when clear the bit UCSWRST immediately is set the BUSY bit UCB!STATW, and the I2c is in effect blocked
what can be ?
Regards
Luigi
