Kenji Arai
Test SPISlave \\ Current lib. does not work on STM32F446RE
Diff: main.cpp
- Revision:
- 0:8f9f2c56e597
- Child:
- 1:a63fb13a0112
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sat Nov 18 10:15:30 2017 +0000
@@ -0,0 +1,169 @@
+/*
+ * Mbed Application program / Test SPI function
+ * Tested on Nucleo-F446RE
+ *
+ * Copyright (c) 2017 Kenji Arai / JH1PJL
+ * http://www.page.sannet.ne.jp/kenjia/index.html
+ * http://mbed.org/users/kenjiArai/
+ * Created: November 7th, 2017
+ * Revised: November 16th, 2017
+ */
+
+/*
+ --SPI1--
+ SPI1_MOSI: PA_7 GPIO_AF5_SPI1
+ SPI1_SCLK: PA_5 GPIO_AF5_SPI1
+ --SPI2--
+ SPI2_MOSI: PC_1 GPIO_AF7_SPI2
+ SPI2_SCLK: PB_10 GPIO_AF5_SPI2
+ --SPI3--
+ SPI3_MOSI: PB_5 GPIO_AF6_SPI3
+ SPI3_SCLK: PB_3 GPIO_AF6_SPI3
+
+ --PortA--
+ SPI1_MOSI: PA_7 GPIO_AF5_SPI1
+ SPI1_SCLK: PA_5 GPIO_AF5_SPI1
+ --PortB--
+ SPI2_SCLK: PB_10 GPIO_AF5_SPI2
+ SPI3_MOSI: PB_5 GPIO_AF6_SPI3
+ SPI3_SCLK: PB_3 GPIO_AF6_SPI3
+ --PortC--
+ SPI2_MOSI: PC_1 GPIO_AF7_SPI2
+ */
+
+/*
+ wiring information
+ connected PA7(D11),PC_1(A4) and PB_5(D4)
+ connected PA5(D13),PB_10(D6) and PB_3(D3)
+ */
+
+// Include --------------------------------------------------------------------
+#include "mbed.h"
+
+// Definition -----------------------------------------------------------------
+#define DOES_NOT_WORK 1
+#define WORKS_WELL 0
+
+#if (DOES_NOT_WORK + WORKS_WELL) != 1
+#error "Please set either A or B to 1”
+#endif
+
+// Constructor ----------------------------------------------------------------
+Serial pc(USBTX, USBRX);
+SPISlave spi_1(PA_7 , NC, PA_5, NC);
+SPISlave spi_2(PC_1 , NC, PB_10, NC);
+SPI spi_3(PB_5 , NC, PB_3);
+
+// RAM ------------------------------------------------------------------------
+
+// ROM / Constant data --------------------------------------------------------
+
+// Function prototypes --------------------------------------------------------
+void print_port(void);
+void print_spi(void);
+
+//------------------------------------------------------------------------------
+// Control Program
+//------------------------------------------------------------------------------
+int main() {
+ uint16_t spi1_data = 0;
+ uint16_t spi2_data = 0;
+
+ pc.printf("Start SPI Master & SPI Slave control program\r\n");
+ spi_1.format(16, 3); // 16bit, CPOL=1, CPHA=0
+ spi_2.format(16, 3);
+ spi_3.format(16, 3);
+ print_port();
+ print_spi();
+#if WORKS_WELL
+ // set register directly
+ // original setting 0x8a33
+ // BIDIMODE(bit15) = 1 (why?)
+ // SPE(bit6) = 0 (when enbale SPI?)
+ // BR(bit5:3) = 110 -> fpclk/128 (correct)
+ SPI1->CR1 = 0x0a73;
+ // original setting 0x8a2b
+ // same as above SPI1
+ // in addition, BR(bit5:3) = 101 -> fpclk/64
+ // because SPI1 is APB2(max90MHz) and SPI2&3 are APB1(Max45MHz)
+ SPI2->CR1 = 0x0a6b; //
+ print_spi();
+#elif DOES_NOT_WORK
+ // no additional setting
+ // Original setting
+ // SPI1->CR1 = 0x8a33;
+ // SPI2->CR1 = 0x8a2b;
+#endif
+ for (uint16_t i = 0;; i++){
+ spi_3.write(i);
+ wait_us(100);
+ if (spi_1.receive() != 0){
+ spi1_data = spi_1.read();// Read byte from master
+ }
+ if (spi_2.receive() != 0){
+ spi2_data = spi_2.read();// Read byte from master
+ }
+ pc.printf("%d, %d, %d\r\n", i, spi1_data, spi2_data);
+ if ((i != spi1_data) || (i != spi2_data)){
+ pc.printf("Data unmatch!!\r\n");
+ }
+ }
+}
+
+void print_port(void)
+{
+ //---- Only for Debug purpose
+ // PA
+ pc.printf("PA7/AF5,PA5/AF5,PA4/AF5\r\n");
+ pc.printf("PA7/AF5(SPI1/MOSI),PA5/AF5(SPI1/SCLK)\r\n");
+ pc.printf("PA->\r\n");
+ pc.printf("AFRL 0x%08x:0x%08x\r\n",&GPIOA->AFR[0], GPIOA->AFR[0]);
+ pc.printf("AFRH 0x%08x:0x%08x\r\n",&GPIOA->AFR[1], GPIOA->AFR[1]);
+ pc.printf("MODER 0x%08x:0x%08x\r\n",&GPIOA->MODER, GPIOA->MODER);
+ pc.printf("PUPDR 0x%08x:0x%08x\r\n",&GPIOA->PUPDR, GPIOA->PUPDR);
+ pc.printf("OTYPER 0x%08x:0x%08x\r\n",&GPIOA->OTYPER, GPIOA->OTYPER);
+ pc.printf("OSPEEDR 0x%08x:0x%08x\r\n",&GPIOA->OSPEEDR, GPIOA->OSPEEDR);
+ // PB
+ pc.printf("PB10/AF5(SPI2/SCLK),PB5/AF6(MOSI),PB3/AF6(SCLK)\r\n");
+ pc.printf("PB->\r\n");
+ pc.printf("AFRL 0x%08x:0x%08x\r\n",&GPIOB->AFR[0], GPIOB->AFR[0]);
+ pc.printf("AFRH 0x%08x:0x%08x\r\n",&GPIOB->AFR[1], GPIOB->AFR[1]);
+ pc.printf("MODER 0x%08x:0x%08x\r\n",&GPIOB->MODER, GPIOB->MODER);
+ pc.printf("PUPDR 0x%08x:0x%08x\r\n",&GPIOB->PUPDR, GPIOB->PUPDR);
+ pc.printf("OTYPER 0x%08x:0x%08x\r\n",&GPIOB->OTYPER, GPIOB->OTYPER);
+ pc.printf("OSPEEDR 0x%08x:0x%08x\r\n",&GPIOB->OSPEEDR, GPIOB->OSPEEDR);
+ // PC
+ pc.printf("PC1/AF7(SPI2/MOSI)\r\n");
+ pc.printf("PC->\r\n");
+ pc.printf("AFRL 0x%08x:0x%08x\r\n",&GPIOC->AFR[0], GPIOC->AFR[0]);
+ pc.printf("AFRH 0x%08x:0x%08x\r\n",&GPIOC->AFR[1], GPIOC->AFR[1]);
+ pc.printf("MODER 0x%08x:0x%08x\r\n",&GPIOC->MODER, GPIOC->MODER);
+ pc.printf("PUPDR 0x%08x:0x%08x\r\n",&GPIOC->PUPDR, GPIOC->PUPDR);
+ pc.printf("OTYPER 0x%08x:0x%08x\r\n",&GPIOC->OTYPER, GPIOC->OTYPER);
+ pc.printf("OSPEEDR 0x%08x:0x%08x\r\n",&GPIOC->OSPEEDR, GPIOC->OSPEEDR);
+}
+
+void print_spi(void)
+{
+ // SPI1
+ pc.printf("Set to SPISlave\r\n");
+ pc.printf("SPI1->\r\n");
+ pc.printf("CR1 0x%08x:0x%04x\r\n",&SPI1->CR1, SPI1->CR1);
+ pc.printf("CR2 0x%08x:0x%04x\r\n",&SPI1->CR2, SPI1->CR2);
+ pc.printf("SR 0x%08x:0x%04x\r\n",&SPI1->SR, SPI1->SR);
+ pc.printf("DR 0x%08x:0x%04x\r\n",&SPI1->DR, SPI1->DR);
+ // SPI2
+ pc.printf("Set to SPISlave\r\n");
+ pc.printf("SPI2->\r\n");
+ pc.printf("CR1 0x%08x:0x%04x\r\n",&SPI2->CR1, SPI2->CR1);
+ pc.printf("CR2 0x%08x:0x%04x\r\n",&SPI2->CR2, SPI2->CR2);
+ pc.printf("SR 0x%08x:0x%04x\r\n",&SPI2->SR, SPI2->SR);
+ pc.printf("DR 0x%08x:0x%04x\r\n",&SPI2->DR, SPI2->DR);
+ // SPI3
+ pc.printf("Set to SPI (Master)\r\n");
+ pc.printf("SPI3->\r\n");
+ pc.printf("CR1 0x%08x:0x%04x\r\n",&SPI3->CR1, SPI3->CR1);
+ pc.printf("CR2 0x%08x:0x%04x\r\n",&SPI3->CR2, SPI3->CR2);
+ pc.printf("SR 0x%08x:0x%04x\r\n",&SPI3->SR, SPI3->SR);
+ pc.printf("DR 0x%08x:0x%04x\r\n",&SPI3->DR, SPI3->DR);
+}