stm32f103-enc28j60

A working demo of ENC28J60 Ethernet module running on STM32F103C8T6.
This is one of the few working demos on STM32F103C8T6.

Components Required

STM32F103C8 board
ENC28J60 Ethernet RJ45 module
USB2TTL: PL2303 or CH340 or FT232 or CP2102
ST-Link or J-LInk
Router/Switch Hub for Ethernet connection

Circuit Diagram and connections

Refer below table to connect ESP-01S pins with STM32 pins:

ENC28J60	STM32	USB2TTL
GND	GND	GND
VCC	3.3V
RESET	PB8
CS	PA4
SCK	PA5
SI	PA7
SO	PA6
WCL
INT
CLKOUT
	PA9	RX
	PA10	TX

Working & Code Explanation

Use ST-Link to upload the code to STM32.

Connect ST-Link with STM32F103C8T6 Development Board

G   -- GND
CLK -- SWCLK
IO  -- SWDIO
V3  -- 3.3V

Configuration

MAC address

Usually you don't need to change it. The MAC address is configurated in enc28j60_uip.c

static unsigned char mymac[6] = {0x04,0x02,0x35,0x00,0x00,0x01};

IP Addresses

Edit main.c, change the following lines to your IP addresses

const u16 IP_ADDR[4] = {192,168,  6,203};
const u16 IP_MASK[4] = {255,255,255,  0};
const u16 GW_ADDR[4] = {192,168,  6,  1};

HTML Pages

The HTML content are defined in httpd-fsdata.c as a linked array, the entry variable is HTTPD_FS_ROOT.

Printf Output

Add PRINT_TO_UART to preprocessor symbols, this will enable the printf-redirect-to-USART1.

Compile

Include Paths

..\libraries\CMSIS\CM3\CoreSupport;..\libraries\CMSIS\CM3\DeviceSupport\ST\STM32F10x;..\libraries\CMSIS\CM3\DeviceSupport\ST\STM32F10x\startup\arm;..\libraries\STM32F10x_StdPeriph_Driver\inc;..\libraries\uIP-1.0\uip;..\libraries\uIP-1.0\apps\webserver;..\libraries\Hardware;..\user

Compile Control String

--c99 --gnu -c --cpu Cortex-M3 -D__MICROLIB -g -O0 --apcs=interwork --split_sections -I ../libraries/CMSIS/CM3/CoreSupport -I ../libraries/CMSIS/CM3/DeviceSupport/ST/STM32F10x -I ../libraries/CMSIS/CM3/DeviceSupport/ST/STM32F10x/startup/arm -I ../libraries/STM32F10x_StdPeriph_Driver/inc -I ../libraries/uIP-1.0/uip -I ../libraries/uIP-1.0/apps/webserver -I ../libraries/Hardware -I ../user
-I./RTE/_stm32f103_enc28j60
-IC:/Keil_v5/ARM/PACK/Keil/STM32F1xx_DFP/2.3.0/Device/Include
-IC:/Keil_v5/ARM/CMSIS/Include
-D__UVISION_VERSION="525" -DSTM32F10X_MD -DUSE_STDPERIPH_DRIVER -DPRINT_TO_UART
-o .\Objects\*.o --omf_browse .\Objects\*.crf --depend .\Objects\*.d

Test

Ping test: Ping the IP address you defined in main.c
HTTP test: Open a web browser, visit the IP address with http:// protocol

IOsetting/stm32f103-enc28j60