W7200 | WIZnet System
W7200 User's Guide
for STM32F10x Standard Library
- USART - GPIO - Timer
Version 1.0.0
© 2012 WIZnet Co., Ltd. All Rights Reserved. For more information, visit our website at http://www.wiznet.co.kr
Table of Contents
1 Introduction ............................................................................................... 1
2 Environment Setting for Development ............................................................... 1
3 STM32F10x Standard Library Structures ............................................................. 2
4 Configuration ............................................................................................. 4
4.1
Check points .................................................................................. 4
4.2
How to use it ................................................................................. 4
5 Examples Demonstration ............................................................................... 7
5.1
USART .......................................................................................... 7
5.2
GPIO .......................................................................................... 10
5.3
Timer ......................................................................................... 12
W7200 User's Guide for STM32 F10x Standard Library v1.0.0K
1 Introduction
W7200 ARM 32-bit Cortex-M3 MCU core STM32F103CB hardwired TCP/IP, MAC PHY (WIZnet W5200) WIZnet iMCU . STMicroelectronics MCU ST peripheral library .
Figure 1. iMCU W7200 Block Diagram
STMicroelectronics Standard Library , peripheral example . , MCU .
. - USART : printf (+Echoback) - GPIO : IO Toggle (+LED control) - Timer : Time Base
2 Environment Setting for Development
W7200 Startup Guide IAR EWARM (Embedded Workbench for ARM) , STMicroelectronics STM32 F10x Standard Peripheral Library . (STMicroelectronics website, www.st.com/STM32) STM32 F10x Standard Peripheral Library version 3.5.0 , IAR EWARM version 6.5(30-day time limited evaluation license) . W7200 Startup Guide WIZnet website Link . http://www.wiznet.co.kr/UpLoad_Files/ReferenceFiles/W7200_StartUpGuide_EWARM_v100K.pdf
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3 STM32F10x Standard Library Structures
STM32 F10x Standard Peripheral Library [Libraries], [Project], [Utilities] . STM32 F10x Standard Peripheral Library HTML (stm32f10x_stdperiph_lib_um.chm) library .
[Project] . [STM32F10x_StdPeriph_Examples] : STM peripheral drivers [STM32F10x_StdPeriph_Template] : Compiler project template (W7200: EWARM)
Figure 2. Folders List of Project
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[Libraries] . [CMSIS] : ARM Cortex-M MCU library CMSIS : Cortex Microcontroller Software Interface Standard [STM32F10x_StdPeriph_Driver] : STMicroelectronics drivers
Figure 3. Folders List of Libraries [Utilities] .
[STM32_EVAL] : STM MCU MCU(EVB) Set-up
Figure 4. Folders list of STM32_EVAL
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4 Configuration
4.1 Check points
W7200 STM32 MCU W5200 SPI . SPI Table 1 .
Table 1. W7200 Internal Connected (Unused) Pin List
W7200
No
STM32F103CB
W5200
Description
Pins, Pin name
Pins, Pin name
1 2, PC13/TAMPER_RTC 49, W_INT
W5200 Interrupt pin
2 14, PA4/SPI_NSS
50, CSN
3 15, PA5/SPI_SCK
51, SCLK
STM32 MCU(SPI1) W5200
4 16, PA6/SPI_MISO
53, MISO
SPI Interface pin
5 17, PA7/SPI_MOSI
52, MOSI
6 45, PB8
53, W_RESET
W5200 Reset pin
7 46, PB9
54, PWDN
W5200 Power-down pin
4.2 How to use it
STMicroelectronics .
1. STM32 F10x Standard Peripheral Library 2. Examples source code template
$PROJ_DIR$ \ STM32F10x_StdPeriph_Template 3. IAR EWARM Template EWARM project 4. Rebuild Binary image , W7200 5.
W7200 STM32F103CB MCU(128Kbytes Flash memory) Medium-density devices , IAR EWARM Workspace STM3210B-EVAL Set-up . Binary image W7200 W7200 Startup Guide `2 Configuration and Start the Project' .
W7200 User's Guide for STM32 F10x Standard Library v1.0.0K
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Note Setting for C Compiler Preprocessor include library . STM32
F10x Standard Peripheral Library Version 3.5.0 , Project > Options C/C++ Compiler Preprocessor directory symbol .
Figure 5. Setting for C/C++ Compiler Preprocessor
Additional include directories: (one per line) $PROJ_DIR$\..\ $PROJ_DIR$\..\..\..\Libraries\CMSIS\CM3\CoreSupport $PROJ_DIR$\..\..\..\Libraries\CMSIS\CM3\DeviceSupport\ST\STM32F10x $PROJ_DIR$\..\..\..\Libraries\STM32F10x_StdPeriph_Driver\inc $PROJ_DIR$\..\..\..\Utilities\STM32_EVAL $PROJ_DIR$\..\..\..\Utilities\STM32_EVAL\Common $PROJ_DIR$\..\..\..\Utilities\STM32_EVAL\STM3210B_EVAL
Defined symbols: (one per line) USE_STDPERIPH_DRIVER STM32F10X_MD USE_STM3210B_EVAL
.
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Note Make the Binary output file W7200 Startup guide Flash Loader Demonstrator W7200
, Make Binary image . STM32 F10x Standard Peripheral Library Version 3.5.0 , Output binary default, Project > Options Output Converter Generate additional output .
Figure 6. Enable the Generate Additional Output Option
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5 Examples Demonstration
5.1 USART
STMicroelectronics USART USARTx Serial terminal `printf' . 4.2 `How to use it' USART > printf STM32F10x_StdPeriph_Template . `printf' .
Table 2. Source code list of the 'printf' example
File name main.c stm32f10x_conf.h stm32f10x_it.c stm32f10x_it.h system_stm32f10x.c readme.txt
Description main , USART configuration printf Library configuration Interrupt service routine Interrupt handler header System clock configuration system initialization `printf'
Note USART interrupt handling routine , USART interrupt handling routine USART `Interrupt' .
Main USART initialization code . USART_InitStructure STM_EVAL_COMInit UASRT configuration enable .
Example code: USART Initialization USART_InitStructure.USART_BaudRate = 115200; USART_InitStructure.USART_WordLength = USART_WordLength_8b; USART_InitStructure.USART_StopBits = USART_StopBits_1; USART_InitStructure.USART_Parity = USART_Parity_No; USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
STM_EVAL_COMInit(COM1, &USART_InitStructure);
printf USART fputc .
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Example code: Retarget the C library printf function to the USART #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f) PUTCHAR_PROTOTYPE { /* Place your implementation of fputc here */ /* e.g. write a character to the USART */ USART_SendData(EVAL_COM1, (uint8_t) ch);
/* Loop until the end of transmission */ while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET) {}
return ch; }
, printf() Serial terminal . Serial terminal Initialization Table 3 .
Table 3. Serial Terminal Setting
/(Baud rate)
Data
115200
8
1
printf main USART Serial Serial Echoback . Echoback while . USART stm32f10x_usart.c .
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Note Example code iMCU7200EVB . .
Example code: Main Function Int main(void) { unsigned char c;
/* USART1 Initialization */ ... STM_EVAL_COMInit(COM1, &USART_InitStructure);
/* Output a message on Hyperterminal using printf function */ printf("\n\rUSART Printf Example: retarget the C library printf function to the USART\n\r");
// USART Echoback while(1) {
while(USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET) { }
c = USART_ReceiveData(USART1); // Read a character from the USART
USART_SendData(USART1, c);
// Send a character to the USART
}
}
iMCU7200EVB Echoback . printf Serial terminal , `Hello! WIZnet!' Echoback .
Figure 7. USART Demonstration on iMCU7200EVB
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5.2 GPIO
GPIO STMicroelectronics GPIO GPIO Pin Set Reset `IO Toggle'.
Note STM32 library PD0 PD2 toggling , W7200 STM32F103CB-48PIN PD0 PD2 . PD0 PD2 iMCU7200EVB LED3, 4 PB0 PB1 . IO toggle EVB LED GPIO toggle .
Main GPIO Initialization . USART InitStructure , GPIO_Init configuration . GPIO STM32 library IO Toggle PB0 PB1 .
Example code: GPIO Initialization /* GPIOB Periph clock enable */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
/* Configure PB0 and PB1 in output push-pull mode */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
PB0 PB1 SET / RESET BSRR BRR . GPIO_BSRR (Port Bit Set/Reset Register) 32bit, 16bit (mapping) SET . GPIO_BRR (Port Bit Reset Register) BSRR RESET . BSRR BRR General purpose I/O stm32f10x.h . Pin0 SET BSRR register 0x00000001, Pin15 RESET BRR register 0x00008000 .
PB0 PB1 SET / RESET . PB0 0x00000001, PB1 0x00000002 SET RESET . BSRR SET, BRR register RESET .
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LED Delay . Delay STM library .
Example code: GPIO Toggle while (1) { /* Set PB0 and PB1 */ GPIOB->BSRR = 0x00000003; Delay(10); /* Reset PB0 and PB1 */ GPIOB->BRR = 0x00000003; Delay(10); }
// 0x00000001 | 0x00000002 // Delay for LED(I/O) toggling indication
// Delay for LED(I/O) toggling indication
iMCU7200EVB LED IO toggle .
Figure 8. IO Toggle - LED on
Figure 9. IO Toggle - LED off
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5.3 Timer
STMicroelectronics Timer TIM Time Base . TIM2 Output Compare Timing mode TIM peripheral configuration 4 Time base Interrupt request .
Note STM32 library PC6, 7, 8, 9 4 Timer Interrupt channel , W7200 STM32F103CB-48PIN . GPIO PB11, 12, 13, 14 output port .
4 Interrupt request .
Table 4. Time base Configuration
Pin PB11 PB12 PB13 PB14
TIM2 CC CC1 CC2 CC3 CC4
CC Register value 40961 27309 13654 6826
Description CC1 update rate = TIM2 counter clock / CCR1_Val = 146.48Hz TIM2 Channel 1 generates an interrupt each 6.8ms CC2 update rate = TIM2 counter clock / CCR2_Val = 219.7Hz TIM2 Channel 2 generates an interrupt each 4.55ms CC3 update rate = TIM2 counter clock / CCR3_Val = 439.4Hz TIM2 Channel 3 generates an interrupt each 2.27ms CC4 update rate = TIM2 counter clock / CCR4_Val = 878.9Hz TIM2 Channel 4 generates an interrupt each 1.13ms
CC Register value main.c . Example code: CCR Value Declarations
__IO uint16_t CCR1_Val = 40961; __IO uint16_t CCR2_Val = 27309; __IO uint16_t CCR3_Val = 13654; __IO uint16_t CCR4_Val = 6826;
Pin .
1. RCC_Configuration
: System clocks configuration
2. GPIO_Configuration
: General purpose I/O configuration
3. TIM2_IRQHandler
: TIM2 Interrupt service routine
- NVIC_Configuration
: Nested vectored interrupt controller configuration
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Pin . . RCC_Configuration GPIOC clock enable GPIOB clock enable .
Example code: RCC Configuration void RCC_Configuration(void) { /* PCLK1 = HCLK/4 */ RCC_PCLK1Config(RCC_HCLK_Div4);
/* TIM2 clock enable */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
/* GPIOB clock enable */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); }
GPIO_Configuration Timer interrupt GPIO Pin . Pin TIM2 interrupt request , Pin .
Example code: GPIO Configuration void GPIO_Configuration(void) { GPIO_InitTypeDef GPIO_InitStructure;
/* GPIOB Configuration: Pin4, 5, 6 and 7 as alternate function push-pull */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure); }
TIM2_IRQHandler Timer interrupt interrupt handling routine. Interrupt request GPIO . GPIO Pin .
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Example code: TIM2_IRQHandler
void TIM2_IRQHandler(void) {
if (TIM_GetITStatus(TIM2, TIM_IT_CC1) != RESET) {
TIM_ClearITPendingBit(TIM2, TIM_IT_CC1); /* Pin PB.11 toggling with frequency = 73.24 Hz */
GPIO_WriteBit(GPIOB, GPIO_Pin_11, (BitAction)(1 - GPIO_ReadOutputDataBit(GPIOB, GPIO_Pin_11))); capture = TIM_GetCapture1(TIM2); TIM_SetCompare1(TIM2, capture + CCR1_Val); } else if (TIM_GetITStatus(TIM2, TIM_IT_CC2) != RESET) { TIM_ClearITPendingBit(TIM2, TIM_IT_CC2); /* Pin PB.12 toggling with frequency = 109.8 Hz */ GPIO_WriteBit(GPIOB, GPIO_Pin_12, (BitAction)(1 - GPIO_ReadOutputDataBit(GPIOB, GPIO_Pin_12))); capture = TIM_GetCapture2(TIM2); TIM_SetCompare2(TIM2, capture + CCR2_Val); } else if (TIM_GetITStatus(TIM2, TIM_IT_CC3) != RESET) { TIM_ClearITPendingBit(TIM2, TIM_IT_CC3); /* Pin PB.13 toggling with frequency = 219.7 Hz */ GPIO_WriteBit(GPIOB, GPIO_Pin_13, (BitAction)(1 - GPIO_ReadOutputDataBit(GPIOB, GPIO_Pin_13))); capture = TIM_GetCapture3(TIM2); TIM_SetCompare3(TIM2, capture + CCR3_Val); } else { TIM_ClearITPendingBit(TIM2, TIM_IT_CC4); /* Pin PB.14 toggling with frequency = 439.4 Hz */ GPIO_WriteBit(GPIOB, GPIO_Pin_14, (BitAction)(1 - GPIO_ReadOutputDataBit(GPIOB, GPIO_Pin_14))); capture = TIM_GetCapture4(TIM2); TIM_SetCompare4(TIM2, capture + CCR4_Val); } }
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NVIC_Configuration Timer2 global interrupt . Timer2 , Timer2 .
Example code: NVIC Configuration void NVIC_Configuration(void) { NVIC_InitTypeDef NVIC_InitStructure;
/* Enable the TIM2 global Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure); }
Binary image iMCU7200EVB , PinPB11, 12, 13, 14 Oscilloscope Timer Interrupt . CC1, CC2, CC3, CC4 .
Figure 10. Oscilloscope Measurements : Timer interrupts
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Document History Information
Version Date
Descriptions
Ver. 1.0.0 6Dec2012 Document Released
Copyright Notice
Copyright 2012 WIZnet, Co., Ltd. All Rights Reserved. Technical Support: support@wiznet.co.kr Sales & Distribution: sales@wiznet.co.kr For more information, visit our website at http://www.wiznet.co.kr
W7200 User's Guide for STM32 F10x Standard Library v1.0.0K
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