129 lines
3.3 KiB
C++
129 lines
3.3 KiB
C++
#include <stm32f1xx_hal.h>
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#include "spi.hpp"
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#include "uart_handler.hpp"
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// STM32VL-Discovery green led - PC9
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#define BTN_PORT GPIOA
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#define LED_PORT GPIOC
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#define LED1_PIN GPIO_PIN_8
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#define LED2_PIN GPIO_PIN_9
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#define BTN_PIN GPIO_PIN_0
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#define LED_PORT_CLK_ENABLE __HAL_RCC_GPIOC_CLK_ENABLE
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constexpr auto UART_PORT = GPIOA_BASE;
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#define UARTPORT GPIOA
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#define UARTTX_PIN GPIO_PIN_9
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#define UARTRX_PIN GPIO_PIN_10
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#define LoRa_RESET_Pin GPIO_PIN_3
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#define LoRa_RESET_GPIO_Port GPIOA
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#define LoRa_CS_Pin GPIO_PIN_4
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#define LoRa_CS_GPIO_Port GPIOA
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#include "rfm95.hpp"
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extern uint8_t LoRa_buff[RH_RF95_FIFO_SIZE];
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extern SPI_HandleTypeDef hspi1;
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// This prevent name mangling for functions used in C/assembly files.
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extern "C" {
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void SysTick_Handler(void) {
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HAL_IncTick();
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HAL_SYSTICK_IRQHandler();
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}
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}
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void initGPIO() {
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__HAL_RCC_GPIOC_CLK_ENABLE();
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__HAL_RCC_GPIOA_CLK_ENABLE();
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GPIO_InitTypeDef GPIO_Config2;
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GPIO_Config2.Mode = GPIO_MODE_INPUT;
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GPIO_Config2.Pull = GPIO_PULLDOWN;
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GPIO_Config2.Speed = GPIO_SPEED_FREQ_HIGH;
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GPIO_Config2.Pin = BTN_PIN;
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GPIO_InitTypeDef GPIO_Config;
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GPIO_Config.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_Config.Pull = GPIO_NOPULL;
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GPIO_Config.Speed = GPIO_SPEED_FREQ_HIGH;
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GPIO_Config.Pin = LED1_PIN | LED2_PIN;
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GPIO_InitTypeDef GPIO_ConfigSPI;
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GPIO_ConfigSPI.Mode = GPIO_MODE_OUTPUT_PP;
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// GPIO_ConfigSPI.Pull = GPIO_NOPULL;
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GPIO_ConfigSPI.Speed = GPIO_SPEED_FREQ_HIGH;
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GPIO_ConfigSPI.Pin = LoRa_CS_Pin | LoRa_RESET_Pin;
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// bare metal init of led1:
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// volatile uint32_t* CRH = reinterpret_cast<uint32_t*>(0x40011000 + 0x04);
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//*CRH |= 0x3;
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//*CRH &= (~0xC);
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HAL_GPIO_Init(LED_PORT, &GPIO_Config);
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HAL_GPIO_Init(BTN_PORT, &GPIO_Config2);
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HAL_GPIO_Init(LoRa_CS_GPIO_Port, &GPIO_ConfigSPI);
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// HAL_GPIO_WritePin(LoRa_CS_GPIO_Port, LoRa_CS_Pin, GPIO_PIN_SET);
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// HAL_GPIO_WritePin(LoRa_RESET_GPIO_Port, LoRa_RESET_Pin, GPIO_PIN_SET);
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}
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extern "C" {
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#include <stdio.h>
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}
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using uart_interface =
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uart_handler<UARTTX_PIN, UARTRX_PIN, UART_PORT, USART1_BASE>;
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int main(void) {
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HAL_Init();
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HAL_SYSTICK_Config(1);
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initGPIO();
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if (!uart_interface::init()) {
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// toggle status led or something
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}
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uart_interface::write("UART Initialized.");
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if (!MX_SPI1_Init()) {
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// toggle status led or something
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}
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HAL_GPIO_WritePin(LoRa_CS_GPIO_Port, LoRa_CS_Pin, GPIO_PIN_SET);
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HAL_GPIO_WritePin(LoRa_RESET_GPIO_Port, LoRa_RESET_Pin, GPIO_PIN_SET);
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HAL_Delay(10);
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uart_interface::write("SPI1 Initialized.");
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uart_interface::write("Initialization done.");
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char OP_Mode = 0x01;
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char buff = 0x7F & OP_Mode;
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char res = 0;
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HAL_GPIO_WritePin(LoRa_CS_GPIO_Port, LoRa_CS_Pin, GPIO_PIN_RESET);
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auto result = HAL_SPI_Transmit(&hspi1, (uint8_t *)&buff, 1, 100);
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HAL_SPI_Receive(&hspi1, (uint8_t *)&res, 1, 100);
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HAL_GPIO_WritePin(LoRa_CS_GPIO_Port, LoRa_CS_Pin, GPIO_PIN_SET);
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RF95_Init();
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while (1) {
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RF95_setModeRx_Continuous();
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HAL_GPIO_WritePin(LED_PORT, LED1_PIN, GPIO_PIN_RESET);
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RF95_receive(LoRa_buff);
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HAL_GPIO_WritePin(LED_PORT, LED1_PIN, GPIO_PIN_SET);
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std::string_view msg{reinterpret_cast<char *>(LoRa_buff)};
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uart_interface::write("Received Message:");
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uart_interface::write(msg);
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// std::string_view foo{"Das ist ein test"};
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// strcpy((char *)LoRa_buff, foo.data());
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// RF95_send(LoRa_buff);
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}
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return 0;
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}
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