bstanwell/ch32v20x-examples
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update 1.8

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This commit is contained in:
qiyongshuang
2023-09-06 10:08:11 +08:00
parent b79c6ac80d
commit 64be955461
760 changed files with 42517 additions and 30957 deletions
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EVT/EXAM/SPI/FullDuplex_HardNSS/User/main.c
+30 -22
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@@ -4,28 +4,30 @@
* Version : V1.0.0
* Date : 2021/06/06
* Description : Main program body.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
/*
*@Note
Hardware NSS mode, master/slave mode, data transceiver:
Master:SPI1_NSS(PA4)\SPI1_SCK(PA5)\SPI1_MISO(PA6)\SPI1_MOSI(PA7).
Slave:SPI1_NSS(PA4)\SPI1_SCK(PA5)\SPI1_MISO(PA6)\SPI1_MOSI(PA7).
This example demonstrates that in hardware NSS mode, the Master and Slave can
transmit and receive in full duplex at the same time.
Note: The two boards download the Master and Slave programs respectively, and
power on at the same time.
Hardware connection:
PA5 -- PA5
PA6 -- PA6
PA7 -- PA7
*/
*Hardware NSS mode, master/slave mode, data transceiver:
*Master:SPI1_NSS(PA4)\SPI1_SCK(PA5)\SPI1_MISO(PA6)\SPI1_MOSI(PA7).
*Slave:SPI1_NSS(PA4)\SPI1_SCK(PA5)\SPI1_MISO(PA6)\SPI1_MOSI(PA7).
*
*This example demonstrates that in hardware NSS mode, the Master and Slave can
*transmit and receive in full duplex at the same time.
*Note: The two boards download the Master and Slave programs respectively, and
*power on at the same time.It is recommended that the NSS pin be connected to
*a 10K pull-up resistor.
* Hardware connection:
* PA4 -- PA4
* PA5 -- PA5
* PA6 -- PA6
* PA7 -- PA7
*
*/
#include "debug.h"
#include "string.h"
@@ -64,7 +66,8 @@ void SPI_FullDuplex_Init(void)
#if(SPI_MODE == HOST_MODE)
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
@@ -99,6 +102,11 @@ void SPI_FullDuplex_Init(void)
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
#endif
#if(SPI_MODE == HOST_MODE)
SPI_SSOutputCmd(SPI1, ENABLE);
#endif
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
@@ -120,8 +128,6 @@ void SPI_FullDuplex_Init(void)
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI1, &SPI_InitStructure);
SPI_SSOutputCmd(SPI1, DISABLE);
SPI_Cmd(SPI1, ENABLE);
}
@@ -138,9 +144,11 @@ int main(void)
u8 j = 0;
u8 value;
SystemCoreClockUpdate();
Delay_Init();
USART_Printf_Init(460800);
printf("SystemClk:%d\r\n", SystemCoreClock);
printf( "ChipID:%08x\r\n", DBGMCU_GetCHIPID() );
#if(SPI_MODE == SLAVE_MODE)
printf("Slave Mode\r\n");