From e9e6d9df75b8f7c288fd26b26677e43b3eaf8287 Mon Sep 17 00:00:00 2001
From: Angoosh <kaplanantonin@gmail.com>
Date: Fri, 12 Nov 2021 12:03:44 +0100
Subject: [PATCH] hello

---
 AT24CSW.c  | 42 ++++++++++++++++++++++++++++++++++++++++++
 AT24CSW.h  | 30 ++++++++++++++++++++++++++++++
 MCP40D18.c | 21 +++++++++++++++++++++
 MCP40D18.h | 23 +++++++++++++++++++++++
 4 files changed, 116 insertions(+)
 create mode 100644 AT24CSW.c
 create mode 100644 AT24CSW.h
 create mode 100644 MCP40D18.c
 create mode 100644 MCP40D18.h

diff --git a/AT24CSW.c b/AT24CSW.c
new file mode 100644
index 0000000..bea6146
--- /dev/null
+++ b/AT24CSW.c
@@ -0,0 +1,42 @@
+/*
+ * AT24CSW.c
+ *
+ *  Created on: Nov 12, 2021
+ *      Author: angoosh
+ */
+
+
+#include "AT24CSW.h"
+#include "main.h"
+
+extern I2C_HandleTypeDef AT24CSW_I2C_HANDLE;
+
+int AT24CSW_Read_Memory(uint8_t address, uint8_t size, uint8_t *data);
+int AT24CSW_Page_Write(uint8_t address, uint8_t *bytes);
+int AT24CSW_Byte_Write(uint8_t address, uint8_t byte);
+
+int AT24CSW_Byte_Write(uint8_t address, uint8_t byte){
+	uint8_t data[2] = {address,byte};
+	HAL_I2C_Master_Transmit(&AT24CSW_I2C_HANDLE, (AT24CSW_ADDRESS << 1), data, 3, 0xFFFF);
+	return 0;
+}
+
+int AT24CSW_Page_Write(uint8_t address, uint8_t *bytes){
+	uint8_t data[9];
+	data[0] = address;
+	for(int i = 0; i < 8; i++){
+		data[i+1] = bytes[i];
+	}
+	HAL_I2C_Master_Transmit(&AT24CSW_I2C_HANDLE, (AT24CSW_ADDRESS << 1), data, 3, 0xFFFF);
+	return 0;
+}
+
+int AT24CSW_Read_Memory(uint8_t address, uint8_t size, uint8_t *data){
+	uint8_t memContent[256];
+	HAL_I2C_Master_Receive(&AT24CSW_I2C_HANDLE, (AT24CSW_ADDRESS << 1), memContent, 0xFF, 0xFFFF);
+
+	for(int i = 0; i < size; i++){
+		data[i] = memContent[address+i];
+	}
+	return 0;
+}
diff --git a/AT24CSW.h b/AT24CSW.h
new file mode 100644
index 0000000..d213436
--- /dev/null
+++ b/AT24CSW.h
@@ -0,0 +1,30 @@
+/*
+ * AT24CSW.h
+ *
+ *  Created on: Nov 12, 2021
+ *      Author: angoosh
+ */
+
+
+/*
+ * Page wite writes 8 bytes to whole page or memory row => bytes A7-A3 are the same
+ * Word address 11111111 is reserved
+ */
+#ifndef INC_AT24CSW_H_
+#define INC_AT24CSW_H_
+
+#include "stm32l0xx_hal.h"
+
+#define PRODUCT_LAST_NUMBER		0
+
+#define AT24CSW_ADDRESS			0b1010000 + PRODUCT_LAST_NUMBER
+#define AT24CSW_SEC_ADDRESS		0b1011000 + PRODUCT_LAST_NUMBER
+
+
+
+
+int AT24CSW_Read_Memory(uint8_t address, uint8_t size, uint8_t *data);
+int AT24CSW_Page_Write(uint8_t address, uint8_t *bytes);
+int AT24CSW_Byte_Write(uint8_t address, uint8_t byte);
+
+#endif /* INC_AT24CSW_H_ */
diff --git a/MCP40D18.c b/MCP40D18.c
new file mode 100644
index 0000000..89c4453
--- /dev/null
+++ b/MCP40D18.c
@@ -0,0 +1,21 @@
+/*
+ * MCP40D18.c
+ *
+ *  Created on: Sep 16, 2021
+ *      Author: angoosh
+ */
+#include "MCP40D18.h"
+#include "main.h"
+
+void SetPotPosition(uint8_t pos);
+
+extern I2C_HandleTypeDef MCP40D18_I2C_HANDLE;
+
+
+void SetPotPosition(uint8_t pos){
+	if(pos < 128){
+		uint8_t data[2] = {0,pos};
+		HAL_I2C_Master_Transmit(&MCP40D18_I2C_HANDLE, (MCP_I2C_ADDRESS << 1), data, 2, 0xFFFF);
+	}
+}
+
diff --git a/MCP40D18.h b/MCP40D18.h
new file mode 100644
index 0000000..66c5d5e
--- /dev/null
+++ b/MCP40D18.h
@@ -0,0 +1,23 @@
+/*
+ * MCP40D18.h
+ *
+ *  Created on: Sep 16, 2021
+ *      Author: angoosh
+ */
+
+#ifndef INC_MCP40D18_H_
+#define INC_MCP40D18_H_
+
+#include "stm32l0xx_hal.h"
+
+#define IS_ALT_ADDRESS
+#ifdef	IS_ALT_ADDRESS
+#define MCP_I2C_ADDRESS			0x3E	//0111110
+#else
+#define MCP_I2C_ADDRESS			0x2E	//0101110
+#endif
+
+
+void SetPotPosition(uint8_t pos);
+
+#endif /* INC_MCP40D18_H_ */