STM34F4 Discovery Board Multiple Serial Ports Problem

erwinkendo · Post by **erwinkendo** » Tue May 22, 2012 9:06 pm

Greetings, I am using various available serial protocols in stm32f4 discovery board. I am using the USART driver and Serial Driver.

When I use SD4 in pins PINA1 and PINA0 with USART3 in pins PINB10 and PINB11, everything works fine, but when I add Serial Port 2 (with Serial Driver or USART driver) in pins PINA2 and PINA3, the code stops working, it prints by SD4 the first batch of data, but then stops or doesn't star at all. Without using usart2, the code works well.

Here is the initialization part for the pins:

Code: Select all


  sdStart(&SD4, NULL);
  palSetPadMode(GPIOA, 1, PAL_MODE_ALTERNATE(8));
  palSetPadMode(GPIOA, 0, PAL_MODE_ALTERNATE(8));

  uartStart(&UARTD3,&UARTpcfggps);
  palSetPadMode(GPIOB, 10, PAL_MODE_ALTERNATE(7));
  palSetPadMode(GPIOB, 11, PAL_MODE_ALTERNATE(7));

  uartStart(&UARTD2,&UARTpcfgimu);
  palSetPadMode(GPIOA, 2, PAL_MODE_ALTERNATE(7));
  palSetPadMode(GPIOA, 3, PAL_MODE_ALTERNATE(7));

Only initializating usart2, the code stops working. I used both usarts some days ago so I know it works, but it seems the three serial devices at the same time have some problems.

Post by **Giovanni** » Tue May 22, 2012 9:13 pm

Are debug options enabled? an assertion could be triggered.

Giovanni

erwinkendo · Post by **erwinkendo** » Tue May 22, 2012 9:52 pm

I enabled all the debugging options in this page: http://www.chibios.org/dokuwiki/doku.php?id=chibios:guides:debug_guide
In compilation time, no errors occurred.

I will try and use st-link and gdb to debugg. Do you recommend me using eclipse for this?

Post by **Giovanni** » Tue May 22, 2012 10:07 pm

Yes, Eclipse is recommended so you can use the debug plugin.

Note that debug options do not trigger errors at compile time, assertions block the execution at runtime when an anomaly is detected, after the halt it is possible to inspect the state from the debugger.

Anyway, verify if you have conflicting DMA channels, are you using other peripherals other than USARTs? if so it is possible some channels are in conflict, you can verify this in mcuconf.h.

Giovanni

erwinkendo · Post by **erwinkendo** » Tue May 22, 2012 10:14 pm

Giovanny, as always thank you.

A little explanation about the DMA channels please, what part of the configuration shows this?

This is my mcuconf.h file:

Code: Select all

/*
    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
                 2011,2012 Giovanni Di Sirio.

    This file is part of ChibiOS/RT.

    ChibiOS/RT is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.

    ChibiOS/RT is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/*
 * STM32F4xx drivers configuration.
 * The following settings override the default settings present in
 * the various device driver implementation headers.
 * Note that the settings for each driver only have effect if the whole
 * driver is enabled in halconf.h.
 *
 * IRQ priorities:
 * 15...0       Lowest...Highest.
 *
 * DMA priorities:
 * 0...3        Lowest...Highest.
 */

/*
 * HAL driver system settings.
 */
#define STM32_NO_INIT                       FALSE
#define STM32_HSI_ENABLED                   TRUE
#define STM32_LSI_ENABLED                   TRUE
#define STM32_HSE_ENABLED                   TRUE
#define STM32_LSE_ENABLED                   FALSE
#define STM32_CLOCK48_REQUIRED              TRUE
#define STM32_SW                            STM32_SW_PLL
#define STM32_PLLSRC                        STM32_PLLSRC_HSE
#define STM32_PLLM_VALUE                    8
#define STM32_PLLN_VALUE                    336
#define STM32_PLLP_VALUE                    2
#define STM32_PLLQ_VALUE                    7
#define STM32_HPRE                          STM32_HPRE_DIV1
#define STM32_PPRE1                         STM32_PPRE1_DIV4
#define STM32_PPRE2                         STM32_PPRE2_DIV2
#define STM32_RTCSEL                        STM32_RTCSEL_LSI
#define STM32_RTCPRE_VALUE                  8
#define STM32_MCO1SEL                       STM32_MCO1SEL_HSI
#define STM32_MCO1PRE                       STM32_MCO1PRE_DIV1
#define STM32_MCO2SEL                       STM32_MCO2SEL_SYSCLK
#define STM32_MCO2PRE                       STM32_MCO2PRE_DIV5
#define STM32_I2SSRC                        STM32_I2SSRC_CKIN
#define STM32_PLLI2SN_VALUE                 192
#define STM32_PLLI2SR_VALUE                 5
#define STM32_VOS                           STM32_VOS_HIGH
#define STM32_PVD_ENABLE                    FALSE
#define STM32_PLS                           STM32_PLS_LEV0

/*
 * ADC driver system settings.
 */
#define STM32_ADC_ADCPRE                    ADC_CCR_ADCPRE_DIV4
#define STM32_ADC_USE_ADC1                  TRUE
#define STM32_ADC_USE_ADC2                  TRUE
#define STM32_ADC_USE_ADC3                  TRUE
#define STM32_ADC_ADC1_DMA_STREAM           STM32_DMA_STREAM_ID(2, 4)
#define STM32_ADC_ADC2_DMA_STREAM           STM32_DMA_STREAM_ID(2, 2)
#define STM32_ADC_ADC3_DMA_STREAM           STM32_DMA_STREAM_ID(2, 1)
#define STM32_ADC_ADC1_DMA_PRIORITY         2
#define STM32_ADC_ADC2_DMA_PRIORITY         2
#define STM32_ADC_ADC3_DMA_PRIORITY         2
#define STM32_ADC_IRQ_PRIORITY              5
#define STM32_ADC_ADC1_DMA_IRQ_PRIORITY     5
#define STM32_ADC_ADC2_DMA_IRQ_PRIORITY     5
#define STM32_ADC_ADC3_DMA_IRQ_PRIORITY     5

/*
 * CAN driver system settings.
 */
#define STM32_CAN_USE_CAN1                  TRUE
#define STM32_CAN_CAN1_IRQ_PRIORITY         11

/*
 * EXT driver system settings.
 */
#define STM32_EXT_EXTI0_IRQ_PRIORITY        6
#define STM32_EXT_EXTI1_IRQ_PRIORITY        6
#define STM32_EXT_EXTI2_IRQ_PRIORITY        6
#define STM32_EXT_EXTI3_IRQ_PRIORITY        6
#define STM32_EXT_EXTI4_IRQ_PRIORITY        6
#define STM32_EXT_EXTI5_9_IRQ_PRIORITY      6
#define STM32_EXT_EXTI10_15_IRQ_PRIORITY    6
#define STM32_EXT_EXTI16_IRQ_PRIORITY       6
#define STM32_EXT_EXTI17_IRQ_PRIORITY       15
#define STM32_EXT_EXTI18_IRQ_PRIORITY       6
#define STM32_EXT_EXTI19_IRQ_PRIORITY       6
#define STM32_EXT_EXTI20_IRQ_PRIORITY       6
#define STM32_EXT_EXTI21_IRQ_PRIORITY       15
#define STM32_EXT_EXTI22_IRQ_PRIORITY       15

/*
 * GPT driver system settings.
 */
#define STM32_GPT_USE_TIM1                  FALSE
#define STM32_GPT_USE_TIM2                  FALSE
#define STM32_GPT_USE_TIM3                  FALSE
#define STM32_GPT_USE_TIM4                  FALSE
#define STM32_GPT_USE_TIM5                  FALSE
#define STM32_GPT_USE_TIM8                  FALSE
#define STM32_GPT_TIM1_IRQ_PRIORITY         7
#define STM32_GPT_TIM2_IRQ_PRIORITY         7
#define STM32_GPT_TIM3_IRQ_PRIORITY         7
#define STM32_GPT_TIM4_IRQ_PRIORITY         7
#define STM32_GPT_TIM5_IRQ_PRIORITY         7
#define STM32_GPT_TIM8_IRQ_PRIORITY         7

/*
 * ICU driver system settings.
 */
#define STM32_ICU_USE_TIM1                  FALSE
#define STM32_ICU_USE_TIM2                  FALSE
#define STM32_ICU_USE_TIM3                  FALSE
#define STM32_ICU_USE_TIM4                  TRUE
#define STM32_ICU_USE_TIM5                  FALSE
#define STM32_ICU_USE_TIM8                  FALSE
#define STM32_ICU_TIM1_IRQ_PRIORITY         7
#define STM32_ICU_TIM2_IRQ_PRIORITY         7
#define STM32_ICU_TIM3_IRQ_PRIORITY         7
#define STM32_ICU_TIM4_IRQ_PRIORITY         7
#define STM32_ICU_TIM5_IRQ_PRIORITY         7
#define STM32_ICU_TIM8_IRQ_PRIORITY         7

/*
 * PWM driver system settings.
 */
#define STM32_PWM_USE_ADVANCED              FALSE
#define STM32_PWM_USE_TIM1                  FALSE
#define STM32_PWM_USE_TIM2                  FALSE
#define STM32_PWM_USE_TIM3                  FALSE
#define STM32_PWM_USE_TIM4                  TRUE
#define STM32_PWM_USE_TIM5                  FALSE
#define STM32_PWM_USE_TIM8                  FALSE
#define STM32_PWM_TIM1_IRQ_PRIORITY         7
#define STM32_PWM_TIM2_IRQ_PRIORITY         7
#define STM32_PWM_TIM3_IRQ_PRIORITY         7
#define STM32_PWM_TIM4_IRQ_PRIORITY         7
#define STM32_PWM_TIM5_IRQ_PRIORITY         7
#define STM32_PWM_TIM8_IRQ_PRIORITY         7

/*
 * SERIAL driver system settings.
 */
#define STM32_SERIAL_USE_USART1             FALSE
#define STM32_SERIAL_USE_USART2             FALSE
#define STM32_SERIAL_USE_USART3             FALSE
#define STM32_SERIAL_USE_UART4              TRUE
#define STM32_SERIAL_USE_UART5              FALSE
#define STM32_SERIAL_USE_USART6             FALSE
#define STM32_SERIAL_USART1_PRIORITY        12
#define STM32_SERIAL_USART2_PRIORITY        12
#define STM32_SERIAL_USART3_PRIORITY        12
#define STM32_SERIAL_UART4_PRIORITY         12
#define STM32_SERIAL_UART5_PRIORITY         12
#define STM32_SERIAL_USART6_PRIORITY        12

/*
 * SPI driver system settings.
 */
#define STM32_SPI_USE_SPI1                  FALSE
#define STM32_SPI_USE_SPI2                  FALSE
#define STM32_SPI_USE_SPI3                  FALSE
#define STM32_SPI_SPI1_RX_DMA_STREAM        STM32_DMA_STREAM_ID(2, 0)
#define STM32_SPI_SPI1_TX_DMA_STREAM        STM32_DMA_STREAM_ID(2, 3)
#define STM32_SPI_SPI2_RX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 3)
#define STM32_SPI_SPI2_TX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 4)
#define STM32_SPI_SPI3_RX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 0)
#define STM32_SPI_SPI3_TX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 7)
#define STM32_SPI_SPI1_DMA_PRIORITY         1
#define STM32_SPI_SPI2_DMA_PRIORITY         1
#define STM32_SPI_SPI3_DMA_PRIORITY         1
#define STM32_SPI_SPI1_IRQ_PRIORITY         10
#define STM32_SPI_SPI2_IRQ_PRIORITY         10
#define STM32_SPI_SPI3_IRQ_PRIORITY         10
#define STM32_SPI_DMA_ERROR_HOOK(spip)      chSysHalt()

/*
 * UART driver system settings.
 */
#define STM32_UART_USE_USART1               FALSE
#define STM32_UART_USE_USART2               TRUE
#define STM32_UART_USE_USART3               TRUE
#define STM32_UART_USART1_RX_DMA_STREAM     STM32_DMA_STREAM_ID(2, 5)
#define STM32_UART_USART1_TX_DMA_STREAM     STM32_DMA_STREAM_ID(2, 7)
#define STM32_UART_USART2_RX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 5)
#define STM32_UART_USART2_TX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 6)
#define STM32_UART_USART3_RX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 1)
#define STM32_UART_USART3_TX_DMA_STREAM     STM32_DMA_STREAM_ID(1, 3)
#define STM32_UART_USART1_IRQ_PRIORITY      12
#define STM32_UART_USART2_IRQ_PRIORITY      12
#define STM32_UART_USART3_IRQ_PRIORITY      12
#define STM32_UART_USART1_DMA_PRIORITY      0
#define STM32_UART_USART2_DMA_PRIORITY      0
#define STM32_UART_USART3_DMA_PRIORITY      0
#define STM32_UART_DMA_ERROR_HOOK(uartp)    chSysHalt()

/*
 * I2C driver system settings.
 */
#define STM32_I2C_USE_I2C1                  TRUE
#define STM32_I2C_USE_I2C2                  FALSE
#define STM32_I2C_USE_I2C3                  FALSE
#define STM32_I2C_I2C1_RX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 0)
#define STM32_I2C_I2C1_TX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 6)
#define STM32_I2C_I2C2_RX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 2)
#define STM32_I2C_I2C2_TX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 7)
#define STM32_I2C_I2C3_RX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 2)
#define STM32_I2C_I2C3_TX_DMA_STREAM        STM32_DMA_STREAM_ID(1, 4)
#define STM32_I2C_I2C1_IRQ_PRIORITY         6
#define STM32_I2C_I2C2_IRQ_PRIORITY         6
#define STM32_I2C_I2C3_IRQ_PRIORITY         6
#define STM32_I2C_I2C1_DMA_PRIORITY         1
#define STM32_I2C_I2C2_DMA_PRIORITY         1
#define STM32_I2C_I2C3_DMA_PRIORITY         1
#define STM32_I2C_I2C1_DMA_ERROR_HOOK()     chSysHalt()
#define STM32_I2C_I2C2_DMA_ERROR_HOOK()     chSysHalt()
#define STM32_I2C_I2C3_DMA_ERROR_HOOK()     chSysHalt()

Post by **Giovanni** » Tue May 22, 2012 10:35 pm

Those STM32_DMA_STREAM_ID(), note that USART3 can conflict with SPI2 using the default settings, USART2 can conflict with I2C1.

Giovanni

erwinkendo · Post by **erwinkendo** » Tue May 22, 2012 10:52 pm

Thank you again.

But trying to fix this in the mcuconf.h file, an error occurred:

Code: Select all

../../os/hal/platforms/STM32/uart_lld.h:239:2: error: #error "invalid DMA stream associated to USART2 TX"

Does this mean I have to change the DMA stream definition in both mcuconf and uart_lld.h files? seems weird.

erwinkendo · Post by **erwinkendo** » Wed May 23, 2012 5:10 am

Ok, found the posible DMA ids in the hal_lld.h file, but when changing STM32_I2C1_TX_DMA_MSK from (STM32_DMA_STREAM_ID_MSK(1, 6)) to STM32_DMA_STREAM_ID_MSK(1, 7)), the system stops working (I tried this in the discovery F4 demo).

Could this be a DMA related issue? the debugging hasn't been successful ChibiOS plugin is not working for me.

Post by **Giovanni** » Wed May 23, 2012 7:36 am

The possible DMA IDs are found in the reference manual, section 8.3.3 "Channel Selection".

If you use I2C1 make sure to use version 2.4.1, version 2.4.0 had a bug on the alternate DMA setting for I2C1.

Without debug capability on your side or a test case that I can run there is not much more I can do. You should try hard to create a working debug environment if you want to create complex applications.

Giovanni

pito · Post by **pito** » Thu May 24, 2012 9:15 pm

An interesting article for those who try to use more than 2 dma transfers at the same time:
http://www.frankvh.com/stm32-information.html
p.

ChibiOS Free Embedded RTOS

STM34F4 Discovery Board Multiple Serial Ports Problem

STM34F4 Discovery Board Multiple Serial Ports Problem

Re: STM34F4 Discovery Board Multiple Serial Ports Problem

Re: STM34F4 Discovery Board Multiple Serial Ports Problem

Re: STM34F4 Discovery Board Multiple Serial Ports Problem

Re: STM34F4 Discovery Board Multiple Serial Ports Problem

Re: STM34F4 Discovery Board Multiple Serial Ports Problem

Re: STM34F4 Discovery Board Multiple Serial Ports Problem

Re: STM34F4 Discovery Board Multiple Serial Ports Problem

Re: STM34F4 Discovery Board Multiple Serial Ports Problem

Re: STM34F4 Discovery Board Multiple Serial Ports Problem