******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
-#include "util.h"
#include "main.h"
#include "stm32f1xx_hal.h"
-#include "usb.h"
/* USER CODE BEGIN Includes */
+#include "util.h"
+#include "usb.h"
+#include "app.h"
+
+#include <string.h>
/* USER CODE END Includes */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
+static void MX_DMA_Init(void);
static void MX_I2C1_Init(void);
static void MX_I2C2_Init(void);
static void MX_USB_PCD_Init(void);
+static void MX_TIM4_Init(void);
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
/* Initialize all configured peripherals */
MX_GPIO_Init();
+ MX_DMA_Init();
+
+ // A hack to let USB host reset us
+ LL_GPIO_InitTypeDef gpio;
+ gpio.Pin = LL_GPIO_PIN_12 | LL_GPIO_PIN_13;
+ gpio.Mode = LL_GPIO_MODE_OUTPUT;
+ gpio.Speed = LL_GPIO_SPEED_FREQ_HIGH;
+ gpio.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
+ LL_GPIO_Init(GPIOA, &gpio);
+ LL_GPIO_ResetOutputPin(GPIOA, LL_GPIO_PIN_12);
+ LL_GPIO_ResetOutputPin(GPIOA, LL_GPIO_PIN_13);
+ LL_mDelay(1000);
+
MX_I2C1_Init();
MX_I2C2_Init();
MX_USB_PCD_Init();
+ MX_TIM4_Init();
/* USER CODE BEGIN 2 */
+ //display_init();
usb_start(&usb);
+ bmp_init();
+
+ LL_TIM_EnableCounter(TIM4);
+ LL_TIM_EnableIT_UPDATE(TIM4);
+ LL_TIM_GenerateEvent_UPDATE(TIM4);
+
+#if 0
+ {
+ byte buf[5] = { 0xff, 0xff, 10, 0xff, 0xff };
+ display_buffer(buf);
+ }
+#endif
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
- int cnt = 0;
while (1)
{
- LL_GPIO_SetOutputPin(LED_GPIO_Port, LED_Pin);
- LL_mDelay(500);
- LL_GPIO_ResetOutputPin(LED_GPIO_Port, LED_Pin);
- LL_mDelay(500);
- debug_printf("Counter = %d\n", cnt++);
+ if (rx_packet_state == 1 && !tx_packet_state)
+ {
+ static byte led_state;
+ if (led_state)
+ LL_GPIO_SetOutputPin(LED_GPIO_Port, LED_Pin);
+ else
+ LL_GPIO_ResetOutputPin(LED_GPIO_Port, LED_Pin);
+ led_state ^= 1;
+
+ // display_buffer(rx_packet);
+ tx_packet_state = 1;
+ tx_packet[0] = adjusted_temp >> 8;
+ tx_packet[1] = adjusted_temp & 0xff;
+ tx_packet[2] = adjusted_press >> 8;
+ tx_packet[3] = adjusted_press & 0xff;
+ usb_ep_send(&usb, 0x82, tx_packet, 8);
+ rx_packet_state = 0;
+ usb_ep_receive(&usb, 0x01, rx_packet, 64);
+ }
+
+ bmp_step();
+
+ // debug_printf("Counter = %d\n", cnt);
+ // display_counter(cnt);
+
+ __WFI();
/* USER CODE END WHILE */
/* Peripheral clock enable */
LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_I2C1);
+ /* I2C1 DMA Init */
+
+ /* I2C1_RX Init */
+ LL_DMA_SetDataTransferDirection(DMA1, LL_DMA_CHANNEL_7, LL_DMA_DIRECTION_PERIPH_TO_MEMORY);
+
+ LL_DMA_SetChannelPriorityLevel(DMA1, LL_DMA_CHANNEL_7, LL_DMA_PRIORITY_LOW);
+
+ LL_DMA_SetMode(DMA1, LL_DMA_CHANNEL_7, LL_DMA_MODE_NORMAL);
+
+ LL_DMA_SetPeriphIncMode(DMA1, LL_DMA_CHANNEL_7, LL_DMA_PERIPH_NOINCREMENT);
+
+ LL_DMA_SetMemoryIncMode(DMA1, LL_DMA_CHANNEL_7, LL_DMA_MEMORY_INCREMENT);
+
+ LL_DMA_SetPeriphSize(DMA1, LL_DMA_CHANNEL_7, LL_DMA_PDATAALIGN_BYTE);
+
+ LL_DMA_SetMemorySize(DMA1, LL_DMA_CHANNEL_7, LL_DMA_MDATAALIGN_BYTE);
+
+ /* I2C1_TX Init */
+ LL_DMA_SetDataTransferDirection(DMA1, LL_DMA_CHANNEL_6, LL_DMA_DIRECTION_MEMORY_TO_PERIPH);
+
+ LL_DMA_SetChannelPriorityLevel(DMA1, LL_DMA_CHANNEL_6, LL_DMA_PRIORITY_LOW);
+
+ LL_DMA_SetMode(DMA1, LL_DMA_CHANNEL_6, LL_DMA_MODE_NORMAL);
+
+ LL_DMA_SetPeriphIncMode(DMA1, LL_DMA_CHANNEL_6, LL_DMA_PERIPH_NOINCREMENT);
+
+ LL_DMA_SetMemoryIncMode(DMA1, LL_DMA_CHANNEL_6, LL_DMA_MEMORY_INCREMENT);
+
+ LL_DMA_SetPeriphSize(DMA1, LL_DMA_CHANNEL_6, LL_DMA_PDATAALIGN_BYTE);
+
+ LL_DMA_SetMemorySize(DMA1, LL_DMA_CHANNEL_6, LL_DMA_MDATAALIGN_BYTE);
+
/**I2C Initialization
*/
I2C_InitStruct.PeripheralMode = LL_I2C_MODE_I2C;
- I2C_InitStruct.ClockSpeed = 100000;
+ I2C_InitStruct.ClockSpeed = 400000;
I2C_InitStruct.DutyCycle = LL_I2C_DUTYCYCLE_2;
I2C_InitStruct.OwnAddress1 = 0;
I2C_InitStruct.TypeAcknowledge = LL_I2C_ACK;
}
+/* TIM4 init function */
+static void MX_TIM4_Init(void)
+{
+
+ LL_TIM_InitTypeDef TIM_InitStruct;
+ LL_TIM_OC_InitTypeDef TIM_OC_InitStruct;
+
+ /* Peripheral clock enable */
+ LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_TIM4);
+
+ /* TIM4 interrupt Init */
+ NVIC_SetPriority(TIM4_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
+ NVIC_EnableIRQ(TIM4_IRQn);
+
+ TIM_InitStruct.Prescaler = 7200;
+ TIM_InitStruct.CounterMode = LL_TIM_COUNTERMODE_UP;
+ TIM_InitStruct.Autoreload = 1000;
+ TIM_InitStruct.ClockDivision = LL_TIM_CLOCKDIVISION_DIV1;
+ LL_TIM_Init(TIM4, &TIM_InitStruct);
+
+ LL_TIM_DisableARRPreload(TIM4);
+
+ LL_TIM_SetClockSource(TIM4, LL_TIM_CLOCKSOURCE_INTERNAL);
+
+ TIM_OC_InitStruct.OCMode = LL_TIM_OCMODE_FROZEN;
+ TIM_OC_InitStruct.OCState = LL_TIM_OCSTATE_DISABLE;
+ TIM_OC_InitStruct.OCNState = LL_TIM_OCSTATE_DISABLE;
+ TIM_OC_InitStruct.CompareValue = 0;
+ TIM_OC_InitStruct.OCPolarity = LL_TIM_OCPOLARITY_HIGH;
+ LL_TIM_OC_Init(TIM4, LL_TIM_CHANNEL_CH1, &TIM_OC_InitStruct);
+
+ LL_TIM_OC_DisableFast(TIM4, LL_TIM_CHANNEL_CH1);
+
+ LL_TIM_SetTriggerOutput(TIM4, LL_TIM_TRGO_RESET);
+
+ LL_TIM_DisableMasterSlaveMode(TIM4);
+
+}
+
/* USB init function */
static void MX_USB_PCD_Init(void)
{
+
hpcd_USB_FS.Instance = USB;
hpcd_USB_FS.Init.dev_endpoints = 8;
hpcd_USB_FS.Init.speed = PCD_SPEED_FULL;
{
_Error_Handler(__FILE__, __LINE__);
}
+
+}
+
+/**
+ * Enable DMA controller clock
+ */
+static void MX_DMA_Init(void)
+{
+ /* Init with LL driver */
+ /* DMA controller clock enable */
+ LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_DMA1);
+
+ /* DMA interrupt init */
+ /* DMA1_Channel6_IRQn interrupt configuration */
+ NVIC_SetPriority(DMA1_Channel6_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
+ NVIC_EnableIRQ(DMA1_Channel6_IRQn);
+ /* DMA1_Channel7_IRQn interrupt configuration */
+ NVIC_SetPriority(DMA1_Channel7_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
+ NVIC_EnableIRQ(DMA1_Channel7_IRQn);
+
}
/** Configure pins as