i have two SPC5 I2C Driver problem and The SPC5studio IDE problem

[guo qiang]

Posted on June 26, 2017 at 11:46

question 1：

i2c_result_t i2c_lld_write(uint8_t dev_addr, uint16_t reg_addr,uint8_t *data, uint8_t ndata_bytes)

{

..................

  /* Check for valid address */

   if ((dev_addr < 8U) || (dev_addr > 119U))

   {

      return I2C_ERROR_INVALID_ADDRESS;    }

................

}

Why is the slave address between 8-119? Is this slave address 7bit or 8bit?

question 2:

My project uses FreeRTOS, each time the code generated, the macro configUSE_TIMERS will automatically become 0. And the Makefile in the compiler parameters will automatically become -O2. Each modification is very troublesome, how can I do?

[Erwan YVIN · Accepted solution]

Posted on June 26, 2017 at 16:31

Hello ,

Question 1:

Why is the slave address between 8-119?Is this slave address 7bit or 8bit?

A seven bit wide address space theoretically allows 128 I2C addresses – however, some addresses are reserved for special purposes. Thus, only 112 addresses are available with the 7 bit address scheme

Question 2:

the Makefile is generated

1) -O2 is set in the platform component

2) for the timer , Go to SPC5 FreeRTOS Component RLA and check Use Software timers

==> Save and generate

Best regards

Erwan

________________ Attachments : 2017-06-26 16_29_21-workspace - SPC5Studio - SPC560Dxx_RLA FreeRTOS SERIAL Test Application for Disc.png : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HyaO&d=%2Fa%2F0X0000000b9p%2FcQTNlN6H2MIIhv4R2XkT0FZrTS8nW6Vzy2iacPUnNDQ&asPdf=false

[guo qiang]

Posted on June 27, 2017 at 02:45

....Why i did not........

SPC5 Studio, version: 5.4

[Erwan YVIN]

Posted on June 27, 2017 at 09:05

Hello Guo ,

You have not clicked on the good configuration settings.

Click on the outline view to change your panel (cf SPC5Studio Help)

       Best regards

              Erwan

[guo qiang]

Posted on June 27, 2017 at 09:20

ok ,I see. 

but

this macro configTOTAL_HEAP_SIZE  This array includes all the necessary queues, task stack memory,

I have a lot of tasks, must be a lot of memory, so I have to configTOTAL_HEAP_SIZE macro set is large, as long as no more than 64K on it. (SPC560B54L5, 64K SRAM)

[Erwan YVIN]

Posted on June 28, 2017 at 16:06

Hello Guo ,

you can not configure greater than 8192

I recommend to you to customize configTOTAL_HEAP_SIZE

by creating a new constant.

i am creating a CR to increase the limit

       Best regards

                       Erwan