Removed ST HAL dependencies for portability

1 files changed, 13 insertions, 10 deletions

diff --git a/src/modbus.h b/src/modbus.h
index 32ca596..f7553dd 100644
--- a/src/modbus.h
+++ b/src/modbus.h
@@ -1,8 +1,8 @@
 #ifndef _MODBUS_H
 #define _MODBUS_H
 
-#include "stm32f1xx_hal.h"
-#include "string.h"
+#include <string.h>
+#include <inttypes.h>
 
 #define read_holding_regs  0x03
 #define read_input_regs    0x04
@@ -12,26 +12,29 @@
 #define highByte(w) ((uint8_t) ((w) >> 8))
 #define word(h, l) ((h << 8) | l)
 
-#define MODBUS_TIMEOUT 50
+/* #define MODBUS_TIMEOUT 50 */
 #define MAX_BUFSIZE    64
 
 typedef struct {
     uint8_t              slave_id;
     uint16_t             response_buffer[MAX_BUFSIZE];
     uint8_t              rbuf_len;
-    UART_HandleTypeDef   modbus_uart;    
+    uint8_t              modbus_timeout;
+    void*                modbus_uart;    
 } modbus_slave_device;
 
 typedef enum {
     MB_OK             =  0x0,
-    MB_SLAVE_ID_ERR   =  0x1,
-    MB_FUNC_ERR       =  0x2,
-    MB_CRC_ERR        =  0x3,
-    MB_UART_ERR       =  0x4,
-    MB_BUSY_ERR       =  0x5,
-    MB_TIMEOUT_ERR    =  0x6
+    MB_UART_ERR_1     =  0x1,
+    MB_UART_ERR_2     =  0x2,
+    MB_UART_ERR_3     =  0x3,
+    MB_SLAVE_ID_ERR   =  0x4,
+    MB_FUNC_ERR       =  0x5,
+    MB_CRC_ERR        =  0x6
 } MB_StatusTypeDef;
 
+extern MB_StatusTypeDef (*MB_UART_Tx)(void*, uint16_t*, uint8_t*, uint8_t*);
+extern MB_StatusTypeDef (*MB_UART_Rx)(void*, uint16_t*, uint8_t*, uint8_t*);
 
 uint16_t crc16_update(uint16_t crc, uint8_t a);
 MB_StatusTypeDef modbus_transaction (uint8_t func, modbus_slave_device *device,