| ??? 11/30/06 20:50 Read: times |
#128796 - What about this Responding to: ???'s previous message |
Erik what do I need here as an address? Is it the slave address? Also I if shit I2ADR = address <<1; //wouldn't it shift/change the address value?
I2ADR = 0x00; // configure I2C address I2ADR = address << 1; What about the general call bit? What is that mean. I am going through the p89v66x datasheet in the mean time. Thanks
/***********************************************************************
DESC: initializes the I2C peripheral and interrupt
sets the device's I2C address and whether it will
respond to the general call address
Uses a data rate of 32.0565kHz
RETURNS: Nothing
************************************************************************/
void i2c_init(unsigned char address, bit generalcall)
// The 7-bit I2C address to use
// 1 = respond to general call, 0 = ignore
// general call
{
P1M1 |= 0x0C; // set pins to open-drain
P1M2 |= 0x0C;
I2ADR = 0x00; // configure I2C address
I2ADR = address << 1;
if (generalcall)
{
I2ADR |= 0x01;
} // if
I2SCLH = 0x13; // configure internal SCL generator
I2SCLL = 0x12; // 99.6351kHz
I2CON = 0x44; // configure I2C interface
// use internal SCL generator
IP1 &= ~0x01; // set interrupt priority to 0
IP1H &= ~0x01;
mi2cstatus = I2C_IDLE; // initial status
EI2C = 1; // enable interrupt
}
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| Topic | Author | Date |
| P89LPC936 I2C | 01/01/70 00:00 | |
| use CodwArchitect | 01/01/70 00:00 | |
| I did | 01/01/70 00:00 | |
| no, I do not do 'time' | 01/01/70 00:00 | |
| It's me | 01/01/70 00:00 | |
| Erik I need help | 01/01/70 00:00 | |
| what about AA? | 01/01/70 00:00 | |
| Here! | 01/01/70 00:00 | |
| read the p89v66x datasheet and go through | 01/01/70 00:00 | |
| What about this | 01/01/70 00:00 | |
| the address issue ... | 01/01/70 00:00 | |
| Don't shift | 01/01/70 00:00 | |
| In other words if a slave uC (or some other | 01/01/70 00:00 | |
| SI != 0 | 01/01/70 00:00 | |
| I do not handle bits, I write the SFR in one go | 01/01/70 00:00 | |
| What is that? | 01/01/70 00:00 | |
| sorry, SILABS SFR doing exactly the same | 01/01/70 00:00 | |
| I tried | 01/01/70 00:00 | |
| are you using a bondout? | 01/01/70 00:00 | |
| Yes | 01/01/70 00:00 | |
| try it the old fashioned way | 01/01/70 00:00 | |
| OK | 01/01/70 00:00 | |
| is this easier to understand? | 01/01/70 00:00 | |
| It Cleared | 01/01/70 00:00 | |
| send an e-mail | 01/01/70 00:00 | |
| OK | 01/01/70 00:00 | |
| License Expired | 01/01/70 00:00 | |
let your friendly local NXP contact know | 01/01/70 00:00 |



