driver: ltc2631

firmware/.vscode/settings.json

@@ -0,0 +1,6 @@
+{
+    "files.associations": {
+        "ad9833_def.h": "c",
+        "ad9833.h": "c"
+    }
+}

firmware/func_gen_stm32f303re_nucleo/Core/Inc/i2c.h

@@ -0,0 +1,52 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    i2c.h
+  * @brief   This file contains all the function prototypes for
+  *          the i2c.c file
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2023 STMicroelectronics.
+  * All rights reserved.
+  *
+  * This software is licensed under terms that can be found in the LICENSE file
+  * in the root directory of this software component.
+  * If no LICENSE file comes with this software, it is provided AS-IS.
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __I2C_H__
+#define __I2C_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+extern I2C_HandleTypeDef hi2c1;
+
+/* USER CODE BEGIN Private defines */
+
+/* USER CODE END Private defines */
+
+void MX_I2C1_Init(void);
+
+/* USER CODE BEGIN Prototypes */
+
+/* USER CODE END Prototypes */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __I2C_H__ */
+

firmware/func_gen_stm32f303re_nucleo/Core/Src/i2c.c

@@ -0,0 +1,130 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    i2c.c
+  * @brief   This file provides code for the configuration
+  *          of the I2C instances.
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2023 STMicroelectronics.
+  * All rights reserved.
+  *
+  * This software is licensed under terms that can be found in the LICENSE file
+  * in the root directory of this software component.
+  * If no LICENSE file comes with this software, it is provided AS-IS.
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+/* Includes ------------------------------------------------------------------*/
+#include "i2c.h"
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+I2C_HandleTypeDef hi2c1;
+
+/* I2C1 init function */
+void MX_I2C1_Init(void)
+{
+
+  /* USER CODE BEGIN I2C1_Init 0 */
+
+  /* USER CODE END I2C1_Init 0 */
+
+  /* USER CODE BEGIN I2C1_Init 1 */
+
+  /* USER CODE END I2C1_Init 1 */
+  hi2c1.Instance = I2C1;
+  hi2c1.Init.Timing = 0x0000020B;
+  hi2c1.Init.OwnAddress1 = 0;
+  hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
+  hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
+  hi2c1.Init.OwnAddress2 = 0;
+  hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
+  hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
+  hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
+  if (HAL_I2C_Init(&hi2c1) != HAL_OK)
+  {
+    Error_Handler();
+  }
+
+  /** Configure Analogue filter
+  */
+  if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
+  {
+    Error_Handler();
+  }
+
+  /** Configure Digital filter
+  */
+  if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN I2C1_Init 2 */
+
+  /* USER CODE END I2C1_Init 2 */
+
+}
+
+void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
+{
+
+  GPIO_InitTypeDef GPIO_InitStruct = {0};
+  if(i2cHandle->Instance==I2C1)
+  {
+  /* USER CODE BEGIN I2C1_MspInit 0 */
+
+  /* USER CODE END I2C1_MspInit 0 */
+
+    __HAL_RCC_GPIOB_CLK_ENABLE();
+    /**I2C1 GPIO Configuration
+    PB6     ------> I2C1_SCL
+    PB7     ------> I2C1_SDA
+    */
+    GPIO_InitStruct.Pin = GPIO_PIN_6|GPIO_PIN_7;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
+    GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
+    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+
+    /* I2C1 clock enable */
+    __HAL_RCC_I2C1_CLK_ENABLE();
+  /* USER CODE BEGIN I2C1_MspInit 1 */
+
+  /* USER CODE END I2C1_MspInit 1 */
+  }
+}
+
+void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle)
+{
+
+  if(i2cHandle->Instance==I2C1)
+  {
+  /* USER CODE BEGIN I2C1_MspDeInit 0 */
+
+  /* USER CODE END I2C1_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_I2C1_CLK_DISABLE();
+
+    /**I2C1 GPIO Configuration
+    PB6     ------> I2C1_SCL
+    PB7     ------> I2C1_SDA
+    */
+    HAL_GPIO_DeInit(GPIOB, GPIO_PIN_6);
+
+    HAL_GPIO_DeInit(GPIOB, GPIO_PIN_7);
+
+  /* USER CODE BEGIN I2C1_MspDeInit 1 */
+
+  /* USER CODE END I2C1_MspDeInit 1 */
+  }
+}
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */

firmware/func_gen_stm32f303re_nucleo/Core/Src/main.c

@@ -18,6 +18,7 @@
 /* USER CODE END Header */
 /* Includes ------------------------------------------------------------------*/
 #include "main.h"
+#include "i2c.h"
 #include "spi.h"
 #include "usart.h"
 #include "gpio.h"
@@ -88,6 +89,7 @@ int main(void)
   MX_GPIO_Init();
   MX_USART2_UART_Init();
   MX_SPI2_Init();
+  MX_I2C1_Init();
   /* USER CODE BEGIN 2 */
 
   /* USER CODE END 2 */
@@ -141,8 +143,9 @@ void SystemClock_Config(void)
   {
     Error_Handler();
   }
-  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART2;
+  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART2|RCC_PERIPHCLK_I2C1;
   PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1;
+  PeriphClkInit.I2c1ClockSelection = RCC_I2C1CLKSOURCE_HSI;
   if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
   {
     Error_Handler();

firmware/func_gen_stm32f303re_nucleo/Makefile

@@ -1,5 +1,5 @@
 ##########################################################################################################################
-# File automatically-generated by tool: [projectgenerator] version: [3.17.1] date: [Sat Mar 25 18:27:37 CET 2023] 
+# File automatically-generated by tool: [projectgenerator] version: [3.17.1] date: [Sat Mar 25 21:51:05 CET 2023] 
 ##########################################################################################################################
 
 # ------------------------------------------------
@@ -61,13 +61,16 @@ Drivers/STM32F3xx_HAL_Driver/Src/stm32f3xx_hal_exti.c \
 Core/Src/system_stm32f3xx.c \
 Core/Src/spi.c \
 Drivers/STM32F3xx_HAL_Driver/Src/stm32f3xx_hal_spi.c \
-Drivers/STM32F3xx_HAL_Driver/Src/stm32f3xx_hal_spi_ex.c
+Drivers/STM32F3xx_HAL_Driver/Src/stm32f3xx_hal_spi_ex.c \
+Core/Src/i2c.c
 
 ######################################
 # shared libs source
 ######################################
 # ad9833
 C_SOURCES += ../shared_libs/drivers/ad9833/ad9833.c
+# ltc2631
+C_SOURCES += ../shared_libs/drivers/ltc2631/ltc2631.c
 
 # ASM sources
 ASM_SOURCES =  \
@@ -132,11 +135,13 @@ C_INCLUDES =  \
 
 # ad9833 includes
 C_INCLUDES += -I../shared_libs/drivers/ad9833
+# ltc2631 includes
+C_INCLUDES += -I../shared_libs/drivers/ltc2631
 
 # compile gcc flags
 ASFLAGS = $(MCU) $(AS_DEFS) $(AS_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections
 
-CFLAGS += $(MCU) $(C_DEFS) $(C_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections
+CFLAGS += $(MCU) $(C_DEFS) $(C_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections -Wdouble-promotion
 
 ifeq ($(DEBUG), 1)
 CFLAGS += -g -gdwarf-2

firmware/func_gen_stm32f303re_nucleo/func_gen_stm32f303re_nucleo.ioc

@@ -1,15 +1,19 @@
 #MicroXplorer Configuration settings - do not modify
 File.Version=6
 GPIO.groupedBy=Group By Peripherals
+I2C1.I2C_Speed_Mode=I2C_Fast
+I2C1.IPParameters=I2C_Speed_Mode,Timing
+I2C1.Timing=0x0000020B
 KeepUserPlacement=false
 Mcu.CPN=STM32F303RET6
 Mcu.Family=STM32F3
-Mcu.IP0=NVIC
+Mcu.IP0=I2C1
-Mcu.IP1=RCC
+Mcu.IP1=NVIC
-Mcu.IP2=SPI2
+Mcu.IP2=RCC
-Mcu.IP3=SYS
+Mcu.IP3=SPI2
-Mcu.IP4=USART2
+Mcu.IP4=SYS
-Mcu.IPNb=5
+Mcu.IP5=USART2
+Mcu.IPNb=6
 Mcu.Name=STM32F303R(D-E)Tx
 Mcu.Package=LQFP64
 Mcu.Pin0=PC13
@@ -18,7 +22,9 @@ Mcu.Pin10=PB15
 Mcu.Pin11=PA13
 Mcu.Pin12=PA14
 Mcu.Pin13=PB3
-Mcu.Pin14=VP_SYS_VS_Systick
+Mcu.Pin14=PB6
+Mcu.Pin15=PB7
+Mcu.Pin16=VP_SYS_VS_Systick
 Mcu.Pin2=PC15-OSC32_OUT
 Mcu.Pin3=PF0-OSC_IN
 Mcu.Pin4=PF1-OSC_OUT
@@ -27,7 +33,7 @@ Mcu.Pin6=PA3
 Mcu.Pin7=PA5
 Mcu.Pin8=PB13
 Mcu.Pin9=PB14
-Mcu.PinsNb=15
+Mcu.PinsNb=17
 Mcu.ThirdPartyNb=0
 Mcu.UserConstants=
 Mcu.UserName=STM32F303RETx
@@ -87,6 +93,11 @@ PB3.GPIOParameters=GPIO_Label
 PB3.GPIO_Label=SWO
 PB3.Locked=true
 PB3.Signal=SYS_JTDO-TRACESWO
+PB6.Locked=true
+PB6.Mode=I2C
+PB6.Signal=I2C1_SCL
+PB7.Mode=I2C
+PB7.Signal=I2C1_SDA
 PC13.GPIOParameters=GPIO_Label,GPIO_ModeDefaultEXTI
 PC13.GPIO_Label=B1 [Blue PushButton]
 PC13.GPIO_ModeDefaultEXTI=GPIO_MODE_IT_FALLING
@@ -131,7 +142,7 @@ ProjectManager.StackSize=0x400
 ProjectManager.TargetToolchain=Makefile
 ProjectManager.ToolChainLocation=
 ProjectManager.UnderRoot=false
-ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_USART2_UART_Init-USART2-false-HAL-true
+ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_USART2_UART_Init-USART2-false-HAL-true,4-MX_SPI2_Init-SPI2-false-HAL-true
 RCC.ADC12outputFreq_Value=72000000
 RCC.ADC34outputFreq_Value=72000000
 RCC.AHBFreq_Value=72000000

firmware/shared_libs/drivers/ad9833/ad9833.c

@@ -147,13 +147,13 @@ void ad9833_setMode(ad9833_handle_t *hfg, AD_mode_t mode)
 static uint32_t ad9833_calcFreq(float f)
 // Calculate register value for AD9833 frequency register from a frequency
 {
-	return (uint32_t)((f * AD_2POW28 / AD_MCLK) + 0.5);
+	return (uint32_t)((f * AD_2POW28 / AD_MCLK) + 0.5f);
 }
 
 static uint16_t ad9833_calcPhase(float a)
 // Calculate the value for AD9833 phase register from given phase in tenths of a degree
 {
-	return (uint16_t)((512.0 * (a / 10) / 45) + 0.5);
+	return (uint16_t)((512.0f * (a / 10) / 45) + 0.5f);
 }
 
 void ad9833_setFrequency(ad9833_handle_t *hfg, AD_channel_t chan, float freq)

firmware/shared_libs/drivers/ad9833/ad9833_def.h

@@ -1,8 +1,6 @@
 // Author: https://github.com/MajicDesigns/MD_AD9833
 #pragma once
 
-#include "main.h"
-
 /** @}*/
 
 // AD9833 Control Register bit definitions

firmware/shared_libs/drivers/ltc2631/ltc2631.c

@@ -0,0 +1,90 @@
+#include "main.h"
+#include "ltc2631.h"
+
+void ltc2631_transmit(ltc2631_handle_t *hdac, uint8_t *data)
+{
+	HAL_I2C_Master_Transmit(hdac->hi2c, hdac->addr, data, 3, 1);
+}
+
+void ltc2631_init(ltc2631_handle_t *hdac, I2C_HandleTypeDef *hi2c, uint8_t addr, ltc2631_res_t res, float ref)
+{
+	hdac->hi2c = hi2c;
+	hdac->addr = addr;
+	hdac->resolution = res;
+	hdac->ref_voltage_f = ref;
+	hdac->ref_voltage_u = ref * 1000U;
+}
+
+void ltc2631_setOutputVoltage_f(ltc2631_handle_t *hdac, float volt)
+{
+	uint16_t value = 0;
+	uint8_t data[3] = {0};
+
+	if (volt > hdac->ref_voltage_f)
+	{
+		volt = hdac->ref_voltage_f;
+	}
+
+	if (volt < 0)
+	{
+		volt = 0;
+	}
+
+	value = (volt / hdac->ref_voltage_f + 0.005f) * (hdac->resolution - 1);
+
+	value = value << (16 - hdac->resolution);
+	data[0] = LTC_WRTIEUPDATE;
+	data[1] = (value >> 8);
+	data[2] = value;
+
+	ltc2631_transmit(hdac, data);
+}
+void ltc2631_setOutputVoltage_u(ltc2631_handle_t *hdac, uint32_t volt_x1000)
+{
+	uint16_t value = 0;
+	uint8_t data[3] = {0};
+
+	if (volt_x1000 > hdac->ref_voltage_u)
+	{
+		volt_x1000 = hdac->ref_voltage_u;
+	}
+
+	if (volt_x1000 < 0)
+	{
+		volt_x1000 = 0;
+	}
+
+	value = (volt_x1000 * (hdac->resolution - 1)) / hdac->ref_voltage_u;
+
+	value = value << (16 - hdac->resolution);
+	data[0] = LTC_WRTIEUPDATE;
+	data[1] = (value >> 8);
+	data[2] = value;
+
+	ltc2631_transmit(hdac, data);
+}
+
+void ltc2631_setOutputValue(ltc2631_handle_t *hdac, uint16_t value)
+{
+	uint8_t data[3] = {0};
+
+	if (value >= (1 << hdac->resolution))
+	{
+		value = (1 << hdac->resolution) - 1;
+	}
+
+	value = value << (16 - hdac->resolution);
+	data[0] = LTC_WRTIEUPDATE;
+	data[1] = (value >> 8);
+	data[2] = value;
+
+	ltc2631_transmit(hdac, data);
+}
+
+void ltc2631_sleep(ltc2631_handle_t *hdac)
+{
+	uint8_t data[3] = {0};
+	data[0] = LTC_SLEEP;
+
+	ltc2631_transmit(hdac, data);
+}

firmware/shared_libs/drivers/ltc2631/ltc2631.h

@@ -0,0 +1,34 @@
+#pragma once
+
+//                                   C3 C2 C1 C0
+#define LTC_WRITE 0b00000000       // 0  0  0  0  Write to Input Register
+#define LTC_UPDATE 0b00010000      // 0  0  0  1  Update (Power Up) DAC Register
+#define LTC_WRTIEUPDATE 0b00110000 // 0  0  1  1  Write to and Update (Power Up) DAC Register
+#define LTC_SLEEP 0b01000000       // 0  1  0  0  Power Down
+#define LTC_INTERNALREF 0b01100000 // 0  1  1  0  Select Internal Reference
+#define LTC_EXTERNALREF 0b01110000 // 0  1  1  1  Select External Reference
+
+#define LTC_REF_2V5 2.5
+#define LTC_REF_4V096 4.096
+
+typedef enum
+{
+    LTC2631_8BIT = 8,
+    LTC2631_10BIT = 10,
+    LTC2631_12BIT = 12
+} ltc2631_res_t;
+
+typedef struct
+{
+    I2C_HandleTypeDef *hi2c;
+    uint8_t addr;
+    ltc2631_res_t resolution;
+    float ref_voltage_f;
+    uint32_t ref_voltage_u;
+} ltc2631_handle_t;
+
+void ltc2631_init(ltc2631_handle_t *hdac, I2C_HandleTypeDef *hi2c, uint8_t addr, ltc2631_res_t res, float ref);
+void ltc2631_setOutputVoltage_f(ltc2631_handle_t *hdac, float volt);
+void ltc2631_setOutputVoltage_u(ltc2631_handle_t *hdac, uint32_t volt_x1000);
+void ltc2631_setOutputValue(ltc2631_handle_t *hdac, uint16_t value);
+void ltc2631_sleep(ltc2631_handle_t *hdac);