CHCh Upgrade: Improved FTDI and CP210x support, add PL2303 support, bugfixes

CONTRIBUTORS.rst

@@ -31,6 +31,13 @@ Notable contributors
 -  Most features development
 
 
+`Heiko Kuester <https://github.com/IngHK>`__
+--------------------------------------------
+
+-  Add CH34x and PL2303 support (CDC host)
+-  Improve FTDI and CP210x support (CDC host)
+
+
 `Hristo Gochkov <https://github.com/me-no-dev>`__
 -------------------------------------------------
 

README.rst

@@ -74,7 +74,7 @@ Host Stack
 - Human Interface Device (HID): Keyboard, Mouse, Generic
 - Mass Storage Class (MSC)
 - Communication Device Class: CDC-ACM
-- Vendor serial over USB: FTDI, CP210x, CH34x
+- Vendor serial over USB: FTDI, CP210x, CH34x, PL2303
 - Hub with multiple-level support
 
 Similar to the Device Stack, if you have a special requirement, ``usbh_app_driver_get_cb()`` can be used to write your own class driver without modifying the stack.

examples/host/cdc_msc_hid/src/cdc_app.c

@@ -31,8 +31,7 @@ static size_t get_console_inputs(uint8_t* buf, size_t bufsize) {
   size_t count = 0;
   while (count < bufsize) {
     int ch = board_getchar();
-    if (ch <= 0) break;
-
+    if (ch <= 0) { break; }
     buf[count] = (uint8_t) ch;
     count++;
   }
@@ -69,10 +68,12 @@ void tuh_cdc_rx_cb(uint8_t idx) {
   uint32_t const bufsize = sizeof(buf) - 1;
 
   // forward cdc interfaces -> console
-  uint32_t count = tuh_cdc_read(idx, buf, bufsize);
-  buf[count] = 0;
-
-  printf("%s", (char*) buf);
+  const uint32_t count = tuh_cdc_read(idx, buf, bufsize);
+  if (count) {
+    buf[count] = 0;
+    printf("%s", (char*) buf);
+    fflush(stdout);
+  }
 }
 
 // Invoked when a device with CDC interface is mounted
@@ -88,7 +89,7 @@ void tuh_cdc_mount_cb(uint8_t idx) {
   // If CFG_TUH_CDC_LINE_CODING_ON_ENUM is defined, line coding will be set by tinyusb stack
   // while eneumerating new cdc device
   cdc_line_coding_t line_coding = {0};
-  if (tuh_cdc_get_local_line_coding(idx, &line_coding)) {
+  if (tuh_cdc_get_line_coding_local(idx, &line_coding)) {
     printf("  Baudrate: %" PRIu32 ", Stop Bits : %u\r\n", line_coding.bit_rate, line_coding.stop_bits);
     printf("  Parity  : %u, Data Width: %u\r\n", line_coding.parity, line_coding.data_bits);
   }

examples/host/cdc_msc_hid/src/tusb_config.h

@@ -103,10 +103,11 @@
 #define CFG_TUH_ENUMERATION_BUFSIZE 256
 
 #define CFG_TUH_HUB                 1 // number of supported hubs
-#define CFG_TUH_CDC                 1 // CDC ACM
+#define CFG_TUH_CDC                 2 // number of supported CDC devices. also activates CDC ACM
 #define CFG_TUH_CDC_FTDI            1 // FTDI Serial.  FTDI is not part of CDC class, only to re-use CDC driver API
 #define CFG_TUH_CDC_CP210X          1 // CP210x Serial. CP210X is not part of CDC class, only to re-use CDC driver API
 #define CFG_TUH_CDC_CH34X           1 // CH340 or CH341 Serial. CH34X is not part of CDC class, only to re-use CDC driver API
+#define CFG_TUH_CDC_PL2303          1 // PL2303 Serial. PL2303 is not part of CDC class, only to re-use CDC driver API
 #define CFG_TUH_HID                 (3*CFG_TUH_DEVICE_MAX) // typical keyboard + mouse device can have 3-4 HID interfaces
 #define CFG_TUH_MSC                 1
 #define CFG_TUH_VENDOR              0
@@ -122,7 +123,7 @@
 
 // Set Line Control state on enumeration/mounted:
 // DTR ( bit 0), RTS (bit 1)
-#define CFG_TUH_CDC_LINE_CONTROL_ON_ENUM    0x03
+#define CFG_TUH_CDC_LINE_CONTROL_ON_ENUM    (CDC_CONTROL_LINE_STATE_DTR | CDC_CONTROL_LINE_STATE_RTS)
 
 // Set Line Coding on enumeration/mounted, value for cdc_line_coding_t
 // bit rate = 115200, 1 stop bit, no parity, 8 bit data width

examples/host/cdc_msc_hid_freertos/src/tusb_config.h

@@ -108,10 +108,11 @@
 #define CFG_TUH_ENUMERATION_BUFSIZE 256
 
 #define CFG_TUH_HUB                 1 // number of supported hubs
-#define CFG_TUH_CDC                 1 // CDC ACM
+#define CFG_TUH_CDC                 1 // number of supported CDC devices. also activates CDC ACM
 #define CFG_TUH_CDC_FTDI            1 // FTDI Serial.  FTDI is not part of CDC class, only to re-use CDC driver API
 #define CFG_TUH_CDC_CP210X          1 // CP210x Serial. CP210X is not part of CDC class, only to re-use CDC driver API
 #define CFG_TUH_CDC_CH34X           1 // CH340 or CH341 Serial. CH34X is not part of CDC class, only to re-use CDC driver API
+#define CFG_TUH_CDC_PL2303          1 // PL2303 Serial. PL2303 is not part of CDC class, only to re-use CDC driver API
 #define CFG_TUH_HID                 (3*CFG_TUH_DEVICE_MAX) // typical keyboard + mouse device can have 3-4 HID interfaces
 #define CFG_TUH_MSC                 1
 #define CFG_TUH_VENDOR              0
@@ -127,7 +128,7 @@
 
 // Set Line Control state on enumeration/mounted:
 // DTR ( bit 0), RTS (bit 1)
-#define CFG_TUH_CDC_LINE_CONTROL_ON_ENUM    0x03
+#define CFG_TUH_CDC_LINE_CONTROL_ON_ENUM    (CDC_CONTROL_LINE_STATE_DTR | CDC_CONTROL_LINE_STATE_RTS)
 
 // Set Line Coding on enumeration/mounted, value for cdc_line_coding_t
 // bit rate = 115200, 1 stop bit, no parity, 8 bit data width

src/class/cdc/cdc.h

@@ -192,6 +192,11 @@ typedef enum {
   CDC_LINE_CODING_STOP_BITS_2   = 2, // 2   bits
 } cdc_line_coding_stopbits_t;
 
+#define CDC_LINE_CODING_STOP_BITS_TEXT(STOP_BITS) (        \
+  STOP_BITS == CDC_LINE_CODING_STOP_BITS_1 ?   "1" :       \
+  STOP_BITS == CDC_LINE_CODING_STOP_BITS_1_5 ? "1.5" :     \
+  STOP_BITS == CDC_LINE_CODING_STOP_BITS_2 ?   "2"   : "?" )
+
 // TODO Backward compatible for typos. Maybe removed in the future release
 #define CDC_LINE_CONDING_STOP_BITS_1   CDC_LINE_CODING_STOP_BITS_1
 #define CDC_LINE_CONDING_STOP_BITS_1_5 CDC_LINE_CODING_STOP_BITS_1_5
@@ -205,6 +210,13 @@ typedef enum {
   CDC_LINE_CODING_PARITY_SPACE = 4,
 } cdc_line_coding_parity_t;
 
+#define CDC_LINE_CODING_PARITY_CHAR(PARITY) (        \
+  PARITY == CDC_LINE_CODING_PARITY_NONE  ? 'N' :     \
+  PARITY == CDC_LINE_CODING_PARITY_ODD   ? 'O' :     \
+  PARITY == CDC_LINE_CODING_PARITY_EVEN  ? 'E' :     \
+  PARITY == CDC_LINE_CODING_PARITY_MARK  ? 'M' :     \
+  PARITY == CDC_LINE_CODING_PARITY_SPACE ? 'S' : '?' )
+
 //--------------------------------------------------------------------+
 // Management Element Notification (Notification Endpoint)
 //--------------------------------------------------------------------+
@@ -392,8 +404,7 @@ static inline uint8_t cdc_functional_desc_typeof(uint8_t const * p_desc)
 //--------------------------------------------------------------------+
 // Requests
 //--------------------------------------------------------------------+
-typedef struct TU_ATTR_PACKED
-{
+typedef struct TU_ATTR_PACKED {
   uint32_t bit_rate;
   uint8_t  stop_bits; ///< 0: 1 stop bit - 1: 1.5 stop bits - 2: 2 stop bits
   uint8_t  parity;    ///< 0: None - 1: Odd - 2: Even - 3: Mark - 4: Space
@@ -402,15 +413,16 @@ typedef struct TU_ATTR_PACKED
 
 TU_VERIFY_STATIC(sizeof(cdc_line_coding_t) == 7, "size is not correct");
 
-typedef struct TU_ATTR_PACKED
-{
-  uint16_t dtr : 1;
-  uint16_t rts : 1;
-  uint16_t : 6;
-  uint16_t : 8;
+typedef union TU_ATTR_PACKED {
+  struct {
+    uint8_t dtr : 1;
+    uint8_t rts : 1;
+    uint8_t     : 6;
+  };
+  uint8_t value;
 } cdc_line_control_state_t;
 
-TU_VERIFY_STATIC(sizeof(cdc_line_control_state_t) == 2, "size is not correct");
+TU_VERIFY_STATIC(sizeof(cdc_line_control_state_t) == 1, "size is not correct");
 
 TU_ATTR_PACKED_END  // End of all packed definitions
 TU_ATTR_BIT_FIELD_ORDER_END