LwIP: Multiple network adapters. Routing..
Posted on July 19, 2017 at 07:55I have lwIP working with two network interfaces: Ethernet + GSM (PPP). How must LwIP work with routing?Device receives IP-packet by Ethernet and transmits to PPP-netif.
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issue about stm32l431 rtc second register update
Posted on July 19, 2017 at 04:51hi,i initialize and set rtc as followint rtcInit(void){ RCC->APB1ENR1 |= RCC_APB1ENR1_PWREN; // enable PWR clock PWR->CR1 |= 0x00000100; // disable BD write protect while(0 == (PWR->CR1 & 0x00000100)); ...
Which kind of memory can the STM32 support?
Posted on July 19, 2017 at 04:15Dear sir:Now, I use STM32F4XX to design our product. And, I want to connect an external MCP flash(Nor flash+Psram)by FMC interface on STM32. The MCP flash means Nor flash and Psram are both in the one package.So I w...
STM32F100RB External Powerup
Posted on July 19, 2017 at 00:57Hello,I am attempting to power the STM32F100RB from a battery pack, however I am unsure what needs to happen in order for this to work and the datasheet has been vague/confusing (or I'm missing something). I at first ...
Where is the MCU's ID?
Posted on July 18, 2017 at 13:51Workalot would like to obtain the MCU's ID, just like the STM32 ST-Link utility does. It reports an ID 0x413 and a 1MB Flash for my STM32F4Discovery.To be clear, I am not after the 96 bit UID (at 0x1FFF7A10) nor am I ...
Using PA15 as an IO on STM32F373, SWJ_CFG?
Posted on July 18, 2017 at 17:27I am using an STM32F373 and debugging with SWD. I want to use PA15 as an IO pin. When I go to configure PA15 as an output, the call to GPIO_INIT() causes a reset which disconnects the debugger. I'm not sure, but I ...
Resolved! STM32f091 VBat pin sinking a lot of mA's
Posted on June 09, 2017 at 22:53I'm trying to set-up a STM32F091 with a battery connected straight into the VBAT pin. For the first couple times I turned on this vbat at 3v, It worked ok(no weird behavior). However, after trying to program the MCU v...
Vbat and temperature monitoring problem STM32F303CB
Posted on June 21, 2017 at 12:55Hello.There was a problem with the operation of the ADC with built-in thermistor and VBAT voltage.The value 4095 is always read.Here is an example of code for reading voltage VBAT: /* Configure the ADC clock */ RCC_...
Ethernet dropped packets
Posted on July 18, 2017 at 12:05Hi,Using STM32CubeMx version 4.21.0 for STM32F765VG with KSZ8081RNA ethernet PHY (RMII mode).Ethernet is painfully slow. Received packets are dropped and transmit packets are somehow also lost.Does anyone have any gui...
USART Receiver pointer to zero
Posted on July 07, 2017 at 11:19 I have a problem at the reception for 4 I use an 8-position buffer where I keep what we receive for USART. When I receive, if the size of the messageis less than that of the buffer, the following receipt is wr...
