--- title: "EFM32GG11 와 W5500 SPI 통신 문제" url: "https://maker.wiznet.io/forum/14321" markdown_url: "https://maker.wiznet.io/forum/14321/md" type: "Forum topic" category: "Ethernet Chips" author: "Member 11121" created: "2021-08-11T09:53:32+09:00" last_activity: "2021-08-24T22:55:35+09:00" language: "en" views: 720 replies: 3 source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)" --- # EFM32GG11 와 W5500 SPI 통신 문제 ## Question Asked by Member 11121 on 2021-08-11 in Ethernet Chips. 안녕하세요 EFM32GG11 및 EFM32GG12 개발보드와 W5500 모듈 간 SPI 통신이 잘 되지 않아 문의 드립니다. EFM32 보드와는 register 읽기 쓰기부터 비정상적으로 동작합니다. 다음과 같이 mac어드레스를 쓰고 읽기를 시도하였으나 썼던 값으로 읽히지 않고 0x01 0x01 0x01 0x01 0x01 0x01 과 같이 읽힙니다. STM32 보드로는 정상동작이 됩니다. ``` reg_wizchip_cs_cbfunc (spiCSlow, spiCShigh); reg_wizchip_spi_cbfunc (spiRecvByte, spiSendByte); reg_wizchip_spiburst_cbfunc (spiRecvByteArray, spiSendByteArray); uint8_t rx_tx_buff_sizes[] = { 2, 2, 2, 2, 2, 2, 2, 2 }; wizchip_init (rx_tx_buff_sizes, rx_tx_buff_sizes); wiz_NetInfo net_info = { .mac = { 0x00, 0x04, 0x05, 0x06, 0x07, 0x08 }, .dhcp = NETINFO_DHCP }; setSHAR(net_info.mac); uint8_t mac[6] = { 0, }; getSHAR(mac); ``` 등록되는 callback 함수 입니다. void spiCSlow(void) { GPIO_PinOutClear(SPI_CS_PORT, SPI_CS_PIN); } void spiCShigh(void) { GPIO_PinOutSet(SPI_CS_PORT, SPI_CS_PIN); } void spiSendByte(uint8_t sendbyte) { // app_log_debug(“tx:0x%.2x\r\n”, sendbyte); USART_Tx(SPI_USART,sendbyte); /* Wait for transmition to finished */ while (!(SPI_USART->STATUS & USART_STATUS_TXC)) ; /* Return the datat read from SPI buffer */ USART_Rx(SPI_USART); } uint8_t spiRecvByte(void) { // app_log_debug(“tx:0x00…\r\n”); USART_Tx(SPI_USART,0x00); /* Wait for transmition to finished */ while (!(SPI_USART->STATUS & USART_STATUS_TXC)) ; /* Return the datat read from SPI buffer */ uint8_t ret = USART_Rx(SPI_USART); // app_log_debug(“rx:%.2x\r\n”, ret); return ret; } void spiSendByteArray(uint8_t * buf, size_t size) { uint8_t *tx_ptr = buf; size_t tx_count = size; while (tx_count > 0) { // app_log_debug(“tx:0x%.2x\r\n”, *tx_ptr); USART_Tx(SPI_USART,*tx_ptr); tx_count–; tx_ptr += sizeof(uint8_t); while (!(SPI_USART->STATUS & USART_STATUS_TXC)) ; USART_Rx(SPI_USART); } } void spiRecvByteArray(uint8_t * buf, size_t size) { uint8_t *rx_ptr = buf; size_t rx_count = size; while (rx_count > 0) { // app_log_debug(“tx:0x00…\r\n”); USART_Tx(SPI_USART,0x00); while (!(SPI_USART->STATUS & USART_STATUS_TXC)) ; *rx_ptr = USART_Rx(SPI_USART); // app_log_debug(“rx:%.2x\r\n”, *rx_ptr); rx_count–; rx_ptr += sizeof(uint8_t); } } SPI 관련하여 다음과 같이 설정하였습니다. CMU_ClockEnable(cmuClock_HFPER, true); /* Enable clock for USART3 */ CMU_ClockEnable(cmuClock_GPIO, true); CMU_ClockEnable(SPI_CLK, true); USART_InitSync_TypeDef init = USART_INITSYNC_DEFAULT; init.autoCsEnable = true; init.msbf = true; init.baudrate = 1000000; /* Configure SPI pins */ GPIO_PinModeSet(SPI_MOSI_PORT, SPI_MOSI_PIN, gpioModePushPull, 1); GPIO_PinModeSet(SPI_MISO_PORT, SPI_MISO_PIN, gpioModeInput, 0); GPIO_PinModeSet(SPI_CLK_PORT, SPI_CLK_PIN, gpioModePushPull, 0); /* Keep CS high to not activate slave */ GPIO_PinModeSet(SPI_CS_PORT, SPI_CS_PIN, gpioModePushPull, 1); /* Reset USART just in case */ USART_Reset(SPI_USART); /* Configure to use SPI master with manual CS */ /* For now, configure SPI for worst case 32MHz clock in order to work for all */ /* configurations. */ USART_InitSync(SPI_USART, &init); /* Module USART3 is configured to location 0 */ SPI_USART->ROUTELOC0 = (SPI_USART->ROUTELOC0 & ~(_USART_ROUTELOC0_TXLOC_MASK | _USART_ROUTELOC0_RXLOC_MASK | _USART_ROUTELOC0_CLKLOC_MASK | _USART_ROUTELOC0_CSLOC_MASK)) | (TX_LOC << _USART_ROUTELOC0_TXLOC_SHIFT) | (RX_LOC << _USART_ROUTELOC0_RXLOC_SHIFT) | (CLK_LOC << _USART_ROUTELOC0_CLKLOC_SHIFT) | (CS_LOC << _USART_ROUTELOC0_CSLOC_SHIFT); /* Enable signals TX, RX, CLK, CS */ SPI_USART->ROUTEPEN |= USART_ROUTEPEN_TXPEN | USART_ROUTEPEN_RXPEN | USART_ROUTEPEN_CLKPEN | USART_ROUTEPEN_CSPEN; 위와 동일한 SPI 설정으로 아두이노를 slave로 하여 SPI 통신 시 정상적으로 data 송수신이 됩니다. 어느 부분에 문제가 있는지 도움 부탁 드리겠습니다. 감사합니다. ## Replies ### Reply 1 by louis, 2021-08-17 안녕하세요 SPI와 UART는 별도의 프로토콜인데 SPI(SEND/RECV)함수 내부에서 UART를 실행하는 것 같습니다. SPI로 칩과 통신하는 코드를 첨부해드리겠습니다. 참고부탁드리겠습니다. ![](https://github.githubassets.com/favicons/favicon.svg) [github.com](https://github.com/Wiznet/Loopback_FRDM-KL25Z_Eclipse/tree/master/src) ### [Loopback_FRDM-KL25Z_Eclipse/src at master · Wiznet/Loopback_FRDM-KL25Z_Eclipse](https://github.com/Wiznet/Loopback_FRDM-KL25Z_Eclipse/tree/master/src) [master/src](https://github.com/Wiznet/Loopback_FRDM-KL25Z_Eclipse/tree/master/src) Create a repository of WIZnet Freescale Example. Contribute to Wiznet/Loopback_FRDM-KL25Z_Eclipse development by creating an account on GitHub. 감사합니다. ### Reply 2 by Member 11121, 2021-08-18 (in reply to reply 1) EFM32 mcu 에서는 SPIDRV라는 별도의 spi lib 를 이용하거나 다음과 같이 USART tx, rx, clk, scs 를 사용하여 spi를 구현하여 사용하는 것 같습니다. 위 구현 내용도 이걸 참고한 것입니다. [github.com](https://github.com/hrshygoodness/EFM32-Library/blob/master/v2/an/an0032_efm32_ethernet/spi.c) #### [hrshygoodness/EFM32-Library/blob/master/v2/an/an0032_efm32_ethernet/spi.c](https://github.com/hrshygoodness/EFM32-Library/blob/master/v2/an/an0032_efm32_ethernet/spi.c) ``` /**************************************************************************//** * @file spi.c * @brief SPI implementation of Board Control interface * This implementation use the USART1 SPI interface to control board * control registers. * @author Silicon Labs * @version 1.09 ****************************************************************************** * @section License * (C) Copyright 2014 Silicon Labs, http://www.silabs.com ******************************************************************************* * * Permission is granted to anyone to use this software for any purpose, * including commercial applications, and to alter it and redistribute it * freely, subject to the following restrictions: * * 1. The origin of this software must not be misrepresented; you must not * claim that you wrote the original software. * 2. Altered source versions must be plainly marked as such, and must not be * misrepresented as being the original software. ``` This file has been truncated. [show original](https://github.com/hrshygoodness/EFM32-Library/blob/master/v2/an/an0032_efm32_ethernet/spi.c) 그러나 두 방법으로도 W5500과 spi 통신이 정상적으로 이루어 지지 않습니다. (아두이노를 slave로 하여 ioLibrary 사용하여 mac 쓰기, 읽기 관련하여 spi 통신하면 원하는 데이터를 받습니다.) ### Reply 3 by irina, 2021-08-24 1. IoLibrary를 사용하신다면, 아래와 같이 선택되어있는지 확인을 해주세요. [![image](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/a/a6d32317e23aa4f344b21c53be6bb357652c7173.png) image854×185 8.2 KB](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/a/a6d32317e23aa4f344b21c53be6bb357652c7173.png) [![image](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/5/5e4d4a949a5e91151572206ac9b3c268f514968d.png) image875×236 11.7 KB](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/5/5e4d4a949a5e91151572206ac9b3c268f514968d.png) 2. getVERSIONR() 를 이용하여, byte단위의 Version 값을 읽어보시길 바랍니다. 정상적인 SPI 동작이라면, **0x04** 가 읽혀집니다. 만일 동작하게 설정을 해놨음에도 동작하지 않는다면, SPI Frame을 정상적으로 보내고 있는지 확인하셔야합니다. ![image](https://maker.wiznet.io/forum_uploads/wiznet/original/2X/1/1db78f2f826874acd54c966f5f6df71ab318bdd5.png) --- Source: https://maker.wiznet.io/forum/14321