libftdi: (tomj) ported set_line_property patch to HEAD

diff --git a/src/ftdi.c b/src/ftdi.c
index 69ad240..e10e052 100644 (file)
--- a/src/ftdi.c
+++ b/src/ftdi.c
@@ -20,7 +20,7 @@
 #include "ftdi.h"
 
 #define ftdi_error_return(code, str) do {  \
-       ftdi->error_str = str;             \
+        ftdi->error_str = str;             \
         return code;                       \
    } while(0);                 
 
@@ -376,6 +376,50 @@ int ftdi_set_baudrate(struct ftdi_context *ftdi, int baudrate)
     return 0;
 }
 
+/*
+    set (RS232) line characteristics
+    by Alain Abbas - 
+*/
+int ftdi_set_line_property(struct ftdi_context *ftdi, enum ftdi_bits_type bits,
+                    enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity)
+{
+    unsigned short value = bits;
+
+    switch(parity) {
+    case NONE:
+        value |= (0x00 << 8);
+        break;
+    case ODD:
+        value |= (0x01 << 8);
+        break;
+    case EVEN:
+        value |= (0x02 << 8);
+        break;
+    case MARK:
+        value |= (0x03 << 8);
+        break;
+    case SPACE:
+        value |= (0x04 << 8);
+        break;
+    }
+    
+    switch(sbit) {
+    case STOP_BIT_1:
+        value |= (0x00 << 11);
+        break;
+    case STOP_BIT_15:
+        value |= (0x01 << 11);
+        break;
+    case STOP_BIT_2:
+        value |= (0x02 << 11);
+        break;
+    }
+    
+    if (usb_control_msg(ftdi->usb_dev, 0x40, 0x04, value, ftdi->index, NULL, 0, ftdi->usb_write_timeout) != 0)
+        ftdi_error_return (-1, "Setting new line property failed");
+    
+    return 0;
+}
 
 int ftdi_write_data(struct ftdi_context *ftdi, unsigned char *buf, int size)
 {

diff --git a/src/ftdi.h b/src/ftdi.h
index 5fc20a6..46ee56c 100644 (file)
--- a/src/ftdi.h
+++ b/src/ftdi.h
@@ -20,6 +20,10 @@
 #include <usb.h>
 
 enum ftdi_chip_type { TYPE_AM=0, TYPE_BM=1, TYPE_2232C=2 };
+enum ftdi_parity_type { NONE=0, ODD=1, EVEN=2, MARK=3, SPACE=4 };
+enum ftdi_stopbits_type { STOP_BIT_1=0, STOP_BIT_15=1, STOP_BIT_2=2 };
+enum ftdi_bits_type { BITS_7=7, BITS_8=8 };
+
 enum ftdi_mpsse_mode {
     BITMODE_RESET  = 0x00,
     BITMODE_BITBANG= 0x01,
@@ -147,6 +151,8 @@ extern "C" {
     int ftdi_usb_purge_buffers(struct ftdi_context *ftdi);
 
     int ftdi_set_baudrate(struct ftdi_context *ftdi, int baudrate);
+    int ftdi_set_line_property(struct ftdi_context *ftdi, enum ftdi_bits_type bits,
+                               enum ftdi_stopbits_type sbit, enum ftdi_parity_type parity);
 
     int ftdi_read_data(struct ftdi_context *ftdi, unsigned char *buf, int size);
     int ftdi_read_data_set_chunksize(struct ftdi_context *ftdi, unsigned int chunksize);