int main() { const double QUARTER_PI = 45.0 * M_PI / 180.0; const double HALF_PI = 90.0 * M_PI / 180.0; Eigen::Vector<double, 3> point(2, 1, 1); Eigen::Matrix3d matrix45; Eigen::Matrix3d matrix90; matrix45 << cos(QUARTER_PI), -sin(QUARTER_PI), 1, sin(QUARTER_PI), ...
# CONFIG_LWIP_TCP_OVERSIZE_QUARTER_MSS is not set # CONFIG_LWIP_TCP_OVERSIZE_DISABLE is not set # CONFIG_LWIP_WND_SCALE is not set CONFIG_LWIP_MAX_UDP_PCBS=16 CONFIG_LWIP_UDP_RECVMBOX_SIZE=6 CONFIG_LWIP_TCPIP_TASK_STACK_SIZE=3072 ...
Therefore these phases need a quarter the clock cycles compared to standard SPI. In terms of performance: QIO > QOUT >> DIO > DOUT. QOUT or QIO are much faster than DIO or DOUT. ESP Easy official builds uses DIO for everything except DOUT for the smaller (1M size) units. ...
Here are wire lengths for quarter-wave antennas at 915MHz and 434MHz: Frequency Length (inches) Length (mm) 915 MHz 3.07" (3 + 1/16") 78mm 434 MHz 6.47" (6 + 1/2") 164mm Powering the Board The board is nominally powered via the on-board micro-USB connector. The other end of...
# CONFIG_TCP_OVERSIZE_QUARTER_MSS is not set # CONFIG_TCP_OVERSIZE_DISABLE is not set CONFIG_UDP_RECVMBOX_SIZE=6 CONFIG_TCPIP_TASK_STACK_SIZE=3072 CONFIG_TCPIP_TASK_AFFINITY_NO_AFFINITY=y # CONFIG_TCPIP_TASK_AFFINITY_CPU0 is not set # CONFIG_TCPIP_TASK_AFFINITY_CPU1 is no...
CONFIG_LWIP_TCP_OVERSIZE_QUARTER_MSS is not set # CONFIG_LWIP_TCP_OVERSIZE_DISABLE is not set CONFIG_LWIP_TCP_RTO_TIME=3000 # end of TCP # # UDP # CONFIG_LWIP_MAX_UDP_PCBS=16 CONFIG_LWIP_UDP_RECVMBOX_SIZE=6 # end of UDP # # Checksums # # CONFIG_LWIP_CHECKSUM_CHECK_IP is ...
The most obvious feature of the Pico Pro is the RJ45 network connector, taking up roughly a quarter of the total board space on what is rather a small PCB. At roughly 75mm x 25mm (3″ X 1″), that board packs quite a few surprises into a very limited space. The first is ...
CONFIG_TCP_OVERSIZE_QUARTER_MSS is not set CONFIG_TCP_OVERSIZE_DISABLE is not set CONFIG_UDP_RECVMBOX_SIZE=6 CONFIG_TCPIP_TASK_STACK_SIZE=3072 CONFIG_TCPIP_TASK_AFFINITY_NO_AFFINITY=y CONFIG_TCPIP_TASK_AFFINITY_CPU0 is not set CONFIG_TCPIP_TASK_AFFINITY_CPU1 is not set CONFIG_TCPIP_...
CONFIG_LWIP_TCP_OVERSIZE_QUARTER_MSS is not set # CONFIG_LWIP_TCP_OVERSIZE_DISABLE is not set # end of TCP # # UDP # CONFIG_LWIP_MAX_UDP_PCBS=16 CONFIG_LWIP_UDP_RECVMBOX_SIZE=6 # end of UDP CONFIG_LWIP_TCPIP_TASK_STACK_SIZE=3072 CONFIG_LWIP_TCPIP_TASK_AFFINITY_NO_AFFINITY=y ...
The ESP32s, are a series of inexpensive microcontrollers introduced in the last quarter of 2016. They are powerful systems on a chip (SoC), they replace the ESP8266, and perhaps one might even say the Arduino UNO. Athough at the moment, they are somewhat more costly, and more complex to...