Author |
Message |
Topic: Has anyone successfully used Dual Partition Flash Program |
johanpret
Replies: 5
Views: 17436
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Forum: General CCS C Discussion Posted: Wed Oct 03, 2018 11:11 am Subject: Dual Partition Flash |
I am also interested in hearing from people who used this feature in CCS. I would like to do OTA updates using this feature and some guidelines would be nice. |
Topic: OLED driver works at 32 MHz but not at 64 MHz |
johanpret
Replies: 41
Views: 84936
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Forum: General CCS C Discussion Posted: Fri Jan 19, 2018 10:36 am Subject: OLED driver works at 32 MHz but not at 64 MHz |
The rise and fall time stay the same for a specific hardware configuration so if you increase the speed there might not be enough time to fall or rise between changes. This will be the bandwidth limit ... |
Topic: OLED driver works at 32 MHz but not at 64 MHz |
johanpret
Replies: 41
Views: 84936
|
Forum: General CCS C Discussion Posted: Fri Jan 19, 2018 7:49 am Subject: OLED driver works at 32 MHz but not at 64 MHz |
There is a 1 us at the end of stop and a 2us before start process is initiated. I agree with all that you are saying I was just sharing my experience with internal i2c functions not working 64000000 c ... |
Topic: OLED driver works at 32 MHz but not at 64 MHz |
johanpret
Replies: 41
Views: 84936
|
Forum: General CCS C Discussion Posted: Thu Jan 18, 2018 11:28 pm Subject: OLED driver works at 32 MHz but not at 64 MHz |
This is the second I2c chip that had the same problem as the i2c
oled. I will test on i2c oled as well. I did put a delay after each i2c_stop() on the built-in driver with no success @ 60000000 so i ... |
Topic: OLED driver works at 32 MHz but not at 64 MHz |
johanpret
Replies: 41
Views: 84936
|
Forum: General CCS C Discussion Posted: Thu Jan 18, 2018 9:21 am Subject: OLED driver works at 32 MHz but not at 64 MHz |
I wrote my own I2C Software Library. Now I can talk to the chip when the clock speed is 64000000. Something in the build in Library causes a failure when i run at 64000000 clock speed. At 3200000 work ... |
Topic: OLED driver works at 32 MHz but not at 64 MHz |
johanpret
Replies: 41
Views: 84936
|
Forum: General CCS C Discussion Posted: Tue Jan 09, 2018 1:20 pm Subject: OLED driver works at 32 MHz but not at 64 MHz |
I have a different I2C chip and experience the same behaviour. 32000000 it work and 64000000 it does not. Chip APDS9960. Any ideas. |
Topic: OLED driver works at 32 MHz but not at 64 MHz |
johanpret
Replies: 41
Views: 84936
|
Forum: General CCS C Discussion Posted: Thu Nov 23, 2017 9:39 am Subject: OLED driver works at 32 MHz but not at 64 MHz |
I will try on different pic PIC18F26K40 and Pic18F67K22. |
Topic: OLED driver works at 32 MHz but not at 64 MHz |
johanpret
Replies: 41
Views: 84936
|
Forum: General CCS C Discussion Posted: Thu Nov 23, 2017 9:36 am Subject: OLED driver works at 32 MHz but not at 64 MHz |
Have 10uF on Vcap for pic and 1 x 100nF and 1 x 1uF |
Topic: OLED driver works at 32 MHz but not at 64 MHz |
johanpret
Replies: 41
Views: 84936
|
Forum: General CCS C Discussion Posted: Thu Nov 23, 2017 8:55 am Subject: OLED driver works at 32 MHz but not at 64 MHz |
Really does not make sense. I lowered the resistors to 1K5 I added extra capacitors and I remover the 20cm cable. Same result, work with 32MHz and not with 64MHz. Also checked with LED in main loop pr ... |
Topic: OLED driver works at 32 MHz but not at 64 MHz |
johanpret
Replies: 41
Views: 84936
|
Forum: General CCS C Discussion Posted: Thu Nov 23, 2017 8:02 am Subject: OLED driver works at 32 MHz but not at 64 MHz |
I have 100nF decouling close to each chip on the board. The display has no decoupling maybe I can add cap on the power pins on the display. |
Topic: OLED driver works at 32 MHz but not at 64 MHz |
johanpret
Replies: 41
Views: 84936
|
Forum: General CCS C Discussion Posted: Thu Nov 23, 2017 8:00 am Subject: OLED driver works at 32 MHz but not at 64 MHz |
Let me decrease the resistance to 1K5. I'll give feedback. |
Topic: OLED driver works at 32 MHz but not at 64 MHz |
johanpret
Replies: 41
Views: 84936
|
Forum: General CCS C Discussion Posted: Thu Nov 23, 2017 7:57 am Subject: OLED driver works at 32 MHz but not at 64 MHz |
Maybe I must move pullup closer to OLED. Now connected with 4 wires about 20cm Long. I will look at shortening the wires. |
Topic: OLED driver works at 32 MHz but not at 64 MHz |
johanpret
Replies: 41
Views: 84936
|
Forum: General CCS C Discussion Posted: Thu Nov 23, 2017 7:55 am Subject: OLED driver works at 32 MHz but not at 64 MHz |
I use 2k pullup to 3V3. Let me flash LED in main loop. Now on timer interrupt.
This is making me crazy, He He. |
Topic: OLED driver works at 32 MHz but not at 64 MHz |
johanpret
Replies: 41
Views: 84936
|
Forum: General CCS C Discussion Posted: Thu Nov 23, 2017 7:50 am Subject: OLED driver works at 32 MHz but not at 64 MHz |
Compiler version Latest - 5.075
Tried with older versions as well same result. |
Topic: OLED driver works at 32 MHz but not at 64 MHz |
johanpret
Replies: 41
Views: 84936
|
Forum: General CCS C Discussion Posted: Thu Nov 23, 2017 3:47 am Subject: OLED driver works at 32 MHz but not at 64 MHz |
I think it must be a bug in the software I2C library. What do u think. I submitted to CCS. |
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