| ??? 11/19/04 12:03 Read: times |
#81500 - No Parameters Responding to: ???'s previous message |
Hi Oleg,
Thanks for your reply. I am planning to write one of my ISR in Assembly because they are very much time consuming with C. Actually it is the Timer 2 Interrupt function. The Timer 2 is in 16 bit auto reload mode. The timer interrupt is used for periodically reading the ADC PCF8591 through software I2C since I am using P89V51RD2 and it doesn't have a hard I2C engine. In continous read mode with C code it was taking approx 180 Machine cycles I thinks with assembly I will be able to reduce this time required. Should I go for P89C66x they have hard I2C in them will that reduce the time needed to ADC handling? Thanks & Regards, Prahlad Purohit |
| Topic | Author | Date |
| Interrupt Function Prototype & Keil | 01/01/70 00:00 | |
| Re: Interrupt Function Prototype & Keil | 01/01/70 00:00 | |
| No Parameters | 01/01/70 00:00 | |
| ASM vs 'C' | 01/01/70 00:00 | |
| Interrupt Routines | 01/01/70 00:00 | |
| Assembly code no better than keil | 01/01/70 00:00 | |
| efficient C | 01/01/70 00:00 | |
| Hardware IIC | 01/01/70 00:00 | |
| I2C(C) = I2C(asm) | 01/01/70 00:00 | |
| C-asm delay | 01/01/70 00:00 | |
OSC_FREQ | 01/01/70 00:00 | |
| no need for prototypes! | 01/01/70 00:00 | |
| Same | 01/01/70 00:00 |