From aabee25e189d2a05cb52e5c54329ab1ec875f084 Mon Sep 17 00:00:00 2001 From: IngHK Date: Thu, 22 Feb 2024 11:45:38 +0100 Subject: [PATCH] added PL2303 support --- examples/host/cdc_msc_hid/src/tusb_config.h | 1 + .../cdc_msc_hid_freertos/src/tusb_config.h | 1 + src/class/cdc/cdc_host.c | 754 +++++++++++++++++- src/class/cdc/serial/pl2303.h | 172 ++++ src/tusb_option.h | 18 + 5 files changed, 942 insertions(+), 4 deletions(-) create mode 100644 src/class/cdc/serial/pl2303.h diff --git a/examples/host/cdc_msc_hid/src/tusb_config.h b/examples/host/cdc_msc_hid/src/tusb_config.h index e4d74077f..fc956c6d3 100644 --- a/examples/host/cdc_msc_hid/src/tusb_config.h +++ b/examples/host/cdc_msc_hid/src/tusb_config.h @@ -106,6 +106,7 @@ #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 diff --git a/examples/host/cdc_msc_hid_freertos/src/tusb_config.h b/examples/host/cdc_msc_hid_freertos/src/tusb_config.h index 9dc89dc55..dd732c700 100644 --- a/examples/host/cdc_msc_hid_freertos/src/tusb_config.h +++ b/examples/host/cdc_msc_hid_freertos/src/tusb_config.h @@ -111,6 +111,7 @@ #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 diff --git a/src/class/cdc/cdc_host.c b/src/class/cdc/cdc_host.c index 86c010fa7..429d0a113 100644 --- a/src/class/cdc/cdc_host.c +++ b/src/class/cdc/cdc_host.c @@ -38,6 +38,7 @@ #include "serial/ftdi_sio.h" #include "serial/cp210x.h" #include "serial/ch34x.h" +#include "serial/pl2303.h" // Level where CFG_TUSB_DEBUG must be at least for this driver is logged #ifndef CFG_TUH_CDC_LOG_LEVEL @@ -91,6 +92,10 @@ typedef struct { ftdi_private_t ftdi; #endif + #if CFG_TUH_CDC_PL2303 + pl2303_private_t pl2303; + #endif + struct { tu_edpt_stream_t tx; tu_edpt_stream_t rx; @@ -105,7 +110,7 @@ typedef struct { CFG_TUH_MEM_SECTION static cdch_interface_t cdch_data[CFG_TUH_CDC]; -#if CFG_TUH_CDC_FTDI +#if CFG_TUH_CDC_FTDI || CFG_TUH_CDC_PL2303 static tusb_desc_device_t desc_dev[CFG_TUH_CDC][CFG_TUH_ENUMERATION_BUFSIZE]; #endif @@ -164,6 +169,22 @@ static bool ch34x_set_line_coding(cdch_interface_t* p_cdc, tuh_xfer_cb_t complet static bool ch34x_set_modem_ctrl(cdch_interface_t* p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); #endif +//------------- PL2303 prototypes -------------// +#if CFG_TUH_CDC_PL2303 +static uint16_t const pl2303_vid_pid_list[][2] = {CFG_TUH_CDC_PL2303_VID_PID_LIST}; +static const struct pl2303_type_data pl2303_type_data[TYPE_COUNT] = {PL2303_TYPE_DATA}; + +CFG_TUH_MEM_SECTION CFG_TUH_MEM_ALIGN + +static bool pl2303_open(uint8_t daddr, tusb_desc_interface_t const * itf_desc, uint16_t max_len); +static void pl2303_process_config(tuh_xfer_t * xfer); + +static bool pl2303_set_baudrate(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); +static bool pl2303_set_data_format(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); +static bool pl2303_set_line_coding(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); +static bool pl2303_set_modem_ctrl(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); +#endif + //------------- Common -------------// enum { SERIAL_DRIVER_ACM = 0, @@ -180,6 +201,10 @@ enum { SERIAL_DRIVER_CH34X, #endif +#if CFG_TUH_CDC_PL2303 + SERIAL_DRIVER_PL2303, +#endif + SERIAL_DRIVER_COUNT }; @@ -260,6 +285,22 @@ static const cdch_serial_driver_t serial_drivers[] = { #endif }, #endif + + #if CFG_TUH_CDC_PL2303 + { + .vid_pid_list = pl2303_vid_pid_list, + .vid_pid_count = TU_ARRAY_SIZE(pl2303_vid_pid_list), + .open = pl2303_open, + .process_set_config = pl2303_process_config, + .set_control_line_state = pl2303_set_modem_ctrl, + .set_baudrate = pl2303_set_baudrate, + .set_data_format = pl2303_set_data_format, + .set_line_coding = pl2303_set_line_coding, + #if CFG_TUSB_DEBUG && CFG_TUSB_DEBUG >= CFG_TUH_CDC_LOG_LEVEL + .name = (uint8_t const *) "PL2303" + #endif + } + #endif }; TU_VERIFY_STATIC(TU_ARRAY_SIZE(serial_drivers) == SERIAL_DRIVER_COUNT, "Serial driver count mismatch"); @@ -1863,7 +1904,7 @@ static bool ch34x_modem_ctrl_request(cdch_interface_t * p_cdc, tuh_xfer_cb_t com // internal control complete to update state such as line state, encoding static void ch34x_internal_control_complete(tuh_xfer_t * xfer) { - // CH34x only has 1 interface and wIndex used as payload and not for bInterfaceNumber + // CH34x has only interface 0, because wIndex is used as payload and not for bInterfaceNumber uint8_t const itf_num = 0; uint8_t idx = tuh_cdc_itf_get_index(xfer->daddr, itf_num); cdch_interface_t* p_cdc = get_itf(idx); @@ -1921,7 +1962,8 @@ static bool ch34x_set_baudrate(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_ } static void ch34x_set_line_coding_stage1_complete(tuh_xfer_t * xfer) { - uint8_t const itf_num = 0; // CH34x has only interface 0, because wIndex is used as payload and not for bInterfaceNumber + // CH34x has only interface 0, because wIndex is used as payload and not for bInterfaceNumber + uint8_t const itf_num = 0; set_line_coding_stage1_complete(xfer, itf_num, ch34x_write_reg_data_format, // control request function to set data format ch34x_internal_control_complete); // control complete function to be called after request @@ -1981,7 +2023,7 @@ static bool ch34x_open(uint8_t daddr, tusb_desc_interface_t const* itf_desc, uin } static void ch34x_process_config(tuh_xfer_t* xfer) { - // CH34x only has 1 interface and wIndex used as payload and not for bInterfaceNumber + // CH34x has only interface 0, because wIndex is used as payload and not for bInterfaceNumber uintptr_t const state = xfer->user_data; uint8_t const itf_num = 0; uint8_t const idx = tuh_cdc_itf_get_index(xfer->daddr, itf_num); @@ -2142,4 +2184,708 @@ static uint8_t ch34x_get_lcr(cdch_interface_t * p_cdc) { #endif // CFG_TUH_CDC_CH34X +//--------------------------------------------------------------------+ +// PL2303 +//--------------------------------------------------------------------+ +#if CFG_TUH_CDC_PL2303 + +static int8_t pl2303_detect_type(cdch_interface_t * p_cdc, uint8_t const idx, uint8_t step, + tuh_xfer_cb_t complete_cb, uintptr_t user_data); +static bool pl2303_encode_baud_rate(cdch_interface_t * p_cdc, uint8_t buf[PL2303_LINE_CODING_BAUDRATE_BUFSIZE]); + +//------------- Control Request -------------// + +static bool pl2303_set_request(cdch_interface_t * p_cdc, uint8_t request, uint8_t requesttype, + uint16_t value, uint16_t index, uint8_t * buffer, uint16_t length, + tuh_xfer_cb_t complete_cb, uintptr_t user_data) { + tusb_control_request_t const request_setup = { + .bmRequestType = requesttype, + .bRequest = request, + .wValue = tu_htole16 (value), + .wIndex = tu_htole16 (index), + .wLength = tu_htole16 (length) + }; + + // use usbh enum buf since application variable does not live long enough + uint8_t * enum_buf = NULL; + + if (buffer && length > 0) { + enum_buf = usbh_get_enum_buf(); + if (request_setup.bmRequestType_bit.direction == TUSB_DIR_OUT) { + tu_memcpy_s(enum_buf, CFG_TUH_ENUMERATION_BUFSIZE, buffer, length); + } + } + + tuh_xfer_t xfer = { + .daddr = p_cdc->daddr, + .ep_addr = 0, + .setup = &request_setup, + .buffer = enum_buf, + .complete_cb = complete_cb, + .user_data = user_data + }; + + return tuh_control_xfer(&xfer); +} + +static bool pl2303_vendor_read(cdch_interface_t * p_cdc, uint16_t value, uint8_t * buf, + tuh_xfer_cb_t complete_cb, uintptr_t user_data) +{ + uint8_t request = p_cdc->pl2303.serial_private.type == &pl2303_type_data[TYPE_HXN] ? + PL2303_VENDOR_READ_NREQUEST : PL2303_VENDOR_READ_REQUEST; + + return pl2303_set_request(p_cdc, request, PL2303_VENDOR_READ_REQUEST_TYPE, value, 0, buf, 1, complete_cb, user_data); +} + +static bool pl2303_vendor_write(cdch_interface_t * p_cdc, uint16_t value, uint16_t index, + tuh_xfer_cb_t complete_cb, uintptr_t user_data) +{ + uint8_t request = p_cdc->pl2303.serial_private.type == &pl2303_type_data[TYPE_HXN] ? + PL2303_VENDOR_WRITE_NREQUEST : PL2303_VENDOR_WRITE_REQUEST; + + return pl2303_set_request(p_cdc, request, PL2303_VENDOR_WRITE_REQUEST_TYPE, value, index, NULL, 0, complete_cb, user_data); +} + +static inline bool pl2303_supports_hx_status(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data) +{ + uint8_t buf; + + return pl2303_set_request(p_cdc, PL2303_VENDOR_READ_REQUEST, PL2303_VENDOR_READ_REQUEST_TYPE, PL2303_READ_TYPE_HX_STATUS, 0, + &buf, 1, complete_cb, user_data); +} + +static inline bool pl2303_set_control_lines(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data) +{ + return pl2303_set_request(p_cdc, PL2303_SET_CONTROL_REQUEST, PL2303_SET_CONTROL_REQUEST_TYPE, + p_cdc->requested_line_state, 0, NULL, 0, complete_cb, user_data); +} + +//static bool pl2303_get_line_request(cdch_interface_t * p_cdc, uint8_t buf[PL2303_LINE_CODING_BUFSIZE]) +//{ +// return pl2303_set_request(p_cdc, PL2303_GET_LINE_REQUEST, PL2303_GET_LINE_REQUEST_TYPE, 0, 0, buf, PL2303_LINE_CODING_BUFSIZE); +//} + +static bool pl2303_set_line_request(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { + // the caller has to precheck, that the new line coding different than the current, else false returned + uint8_t buf[PL2303_LINE_CODING_BUFSIZE]; + /* + * Some PL2303 are known to lose bytes if you change serial settings + * even to the same values as before. Thus we actually need to filter + * in this specific case. + */ + // TODO really necessary to check? what to do in this case when no transfer will happen? + // callback is not called... + TU_VERIFY(memcmp(&p_cdc->requested_line_coding, &p_cdc->line_coding, sizeof(cdc_line_coding_t) ) != 0); + + /* For reference buf[6] data bits value */ + TU_VERIFY(p_cdc->requested_line_coding.data_bits >= 5 && p_cdc->requested_line_coding.data_bits <= 8, 0); + buf[6] = p_cdc->requested_line_coding.data_bits; + + /* For reference buf[0]:buf[3] baud rate value */ + TU_VERIFY(pl2303_encode_baud_rate(p_cdc, &buf[0])); + + /* For reference buf[4]=0 is 1 stop bits */ + /* For reference buf[4]=1 is 1.5 stop bits */ + /* For reference buf[4]=2 is 2 stop bits */ + buf[4] = p_cdc->requested_line_coding.stop_bits; // PL2303 has the same coding + + /* For reference buf[5]=0 is none parity */ + /* For reference buf[5]=1 is odd parity */ + /* For reference buf[5]=2 is even parity */ + /* For reference buf[5]=3 is mark parity */ + /* For reference buf[5]=4 is space parity */ + buf[5] = p_cdc->requested_line_coding.parity; // PL2303 has the same coding + + return pl2303_set_request(p_cdc, PL2303_SET_LINE_REQUEST, PL2303_SET_LINE_REQUEST_TYPE, 0, 0, + buf, PL2303_LINE_CODING_BUFSIZE, complete_cb, user_data); +} + +//static bool pl2303_set_break(cdch_interface_t * p_cdc, bool enable) +//{ +// uint16_t state = enable ? PL2303_BREAK_ON : PL2303_BREAK_OFF; +// return pl2303_set_request(p_cdc, PL2303_BREAK_REQUEST, PL2303_BREAK_REQUEST_TYPE, state, 0, NULL, 0); +//} + +static inline int pl2303_clear_halt(cdch_interface_t * p_cdc, uint8_t endp, tuh_xfer_cb_t complete_cb, uintptr_t user_data) +{ + /* we don't care if it wasn't halted first. in fact some devices + * (like some ibmcam model 1 units) seem to expect hosts to make + * this request for iso endpoints, which can't halt! + */ + return pl2303_set_request(p_cdc, TUSB_REQ_CLEAR_FEATURE, PL2303_CLEAR_HALT_REQUEST_TYPE, TUSB_REQ_FEATURE_EDPT_HALT, endp, + NULL, 0, complete_cb, user_data); +} + +//------------- Driver API -------------// + +// internal control complete to update state such as line state, encoding +static void pl2303_internal_control_complete(tuh_xfer_t * xfer) { + // PL2303 has only interface 0, because wIndex is used as payload and not for bInterfaceNumber + uint8_t const itf_num = 0; + uint8_t idx = tuh_cdc_itf_get_index(xfer->daddr, itf_num); + cdch_interface_t * p_cdc = get_itf(idx); + TU_ASSERT(p_cdc,); + bool const success = (xfer->result == XFER_RESULT_SUCCESS); + TU_LOG_P_CDC("control complete success = %u", success); + + if (success) { + if (xfer->setup->bRequest == PL2303_SET_LINE_REQUEST && + xfer->setup->bmRequestType == PL2303_SET_LINE_REQUEST_TYPE) { + p_cdc->line_coding = p_cdc->requested_line_coding; + } + if (xfer->setup->bRequest == PL2303_SET_CONTROL_REQUEST && + xfer->setup->bmRequestType == PL2303_SET_CONTROL_REQUEST_TYPE) { + p_cdc->line_state = p_cdc->requested_line_state; + } + } + + xfer->complete_cb = p_cdc->user_control_cb; + if (xfer->complete_cb) { + xfer->complete_cb(xfer); + } +} + +static bool pl2303_set_line_coding(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { + p_cdc->user_control_cb = complete_cb; + TU_ASSERT(pl2303_set_line_request(p_cdc, complete_cb ? pl2303_internal_control_complete : NULL, user_data)); + + return true; +} + +static bool pl2303_set_data_format(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { + p_cdc->requested_line_coding.bit_rate = p_cdc->line_coding.bit_rate; + p_cdc->user_control_cb = complete_cb; + TU_ASSERT(pl2303_set_line_request(p_cdc, complete_cb ? pl2303_internal_control_complete : NULL, user_data)); + + return true; +} + +static bool pl2303_set_baudrate(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { + p_cdc->requested_line_coding.stop_bits = p_cdc->line_coding.stop_bits; + p_cdc->requested_line_coding.parity = p_cdc->line_coding.parity; + p_cdc->requested_line_coding.data_bits = p_cdc->line_coding.data_bits; + p_cdc->user_control_cb = complete_cb; + TU_ASSERT(pl2303_set_line_request(p_cdc, complete_cb ? pl2303_internal_control_complete : NULL, user_data)); + + return true; +} + +static bool pl2303_set_modem_ctrl(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { + // PL2303 has the same bit coding + p_cdc->user_control_cb = complete_cb; + TU_ASSERT(pl2303_set_control_lines(p_cdc, complete_cb ? pl2303_internal_control_complete : NULL, user_data)); + + return true; +} + +//------------- Enumeration -------------// + +enum { + CONFIG_PL2303_GET_DESC = 0, + CONFIG_PL2303_DETECT_TYPE, + CONFIG_PL2303_READ1, + CONFIG_PL2303_WRITE1, + CONFIG_PL2303_READ2, + CONFIG_PL2303_READ3, + CONFIG_PL2303_READ4, + CONFIG_PL2303_WRITE2, + CONFIG_PL2303_READ5, + CONFIG_PL2303_READ6, + CONFIG_PL2303_WRITE3, + CONFIG_PL2303_WRITE4, + CONFIG_PL2303_WRITE5, + CONFIG_PL2303_RESET_ENDP1, + CONFIG_PL2303_RESET_ENDP2, + CONFIG_PL2303_LINE_CODING, + CONFIG_PL2303_MODEM_CONTROL, + CONFIG_PL2303_FLOW_CTRL_READ, + CONFIG_PL2303_FLOW_CTRL_WRITE, + CONFIG_PL2303_COMPLETE +}; + +static bool pl2303_open(uint8_t daddr, tusb_desc_interface_t const * itf_desc, uint16_t max_len) { + // PL2303 Interface includes 1 vendor interface + 1 interrupt endpoints + 2 bulk + TU_VERIFY(itf_desc->bNumEndpoints == 3); + TU_VERIFY(sizeof(tusb_desc_interface_t) + 3 * sizeof(tusb_desc_endpoint_t) <= max_len); + + cdch_interface_t * p_cdc = make_new_itf(daddr, itf_desc); + TU_VERIFY(p_cdc); + + p_cdc->serial_drid = SERIAL_DRIVER_PL2303; + p_cdc->pl2303.serial_private.quirks = 0; + p_cdc->pl2303.supports_hx_status = false; + + tusb_desc_endpoint_t const * desc_ep = (tusb_desc_endpoint_t const * ) tu_desc_next(itf_desc); + + // Interrupt endpoint: not used for now + TU_ASSERT(TUSB_DESC_ENDPOINT == tu_desc_type(desc_ep) && + TUSB_XFER_INTERRUPT == desc_ep->bmAttributes.xfer); + TU_ASSERT(tuh_edpt_open(daddr, desc_ep)); + p_cdc->ep_notif = desc_ep->bEndpointAddress; + desc_ep += 1; + + // data endpoints expected to be in pairs + TU_ASSERT(open_ep_stream_pair(p_cdc, desc_ep)); + + return true; +} + +static void pl2303_process_config(tuh_xfer_t * xfer) { + // PL2303 has only interface 0, because wIndex is used as payload and not for bInterfaceNumber + uint8_t const itf_num = 0; + uint8_t const idx = tuh_cdc_itf_get_index(xfer->daddr, itf_num); + cdch_interface_t * p_cdc = get_itf(idx); + // state CONFIG_PL2303_READ1 may have no success due to expected stall by pl2303_supports_hx_status() + TU_ASSERT_COMPLETE(p_cdc && (xfer->result == XFER_RESULT_SUCCESS || xfer->user_data == CONFIG_PL2303_READ1)); + uint8_t buf; + int8_t type; + + switch (xfer->user_data) { + + // from here sequence overtaken from Linux Kernel function pl2303_startup() + case CONFIG_PL2303_GET_DESC: + p_cdc->user_control_cb = pl2303_process_config; // set once for whole process config + // get device descriptor + TU_ASSERT_COMPLETE(tuh_descriptor_get_device(xfer->daddr, desc_dev[idx], sizeof(tusb_desc_device_t), + pl2303_process_config, CONFIG_PL2303_DETECT_TYPE)); + break; + + case CONFIG_PL2303_DETECT_TYPE: + // get type and quirks (step 1) + type = pl2303_detect_type (p_cdc, idx, 1, pl2303_process_config, CONFIG_PL2303_READ1); // step 1 + TU_ASSERT_COMPLETE(type!=PL2303_DETECT_TYPE_FAILED); + if (type == PL2303_SUPPORTS_HX_STATUS_TRIGGERED) { + break; + } // else: no transfer triggered and continue with CONFIG_PL2303_READ1 + TU_ATTR_FALLTHROUGH; + + case CONFIG_PL2303_READ1: + // get supports_hx_status, type and quirks (step 2), do special read + p_cdc->pl2303.supports_hx_status = ( // will not be true, if coming directly from previous case + xfer->user_data == CONFIG_PL2303_READ1 && xfer->result == XFER_RESULT_SUCCESS ); + type = pl2303_detect_type (p_cdc, idx, 2, NULL, 0); // step 2 now with supports_hx_status + TU_ASSERT_COMPLETE(type!=PL2303_DETECT_TYPE_FAILED); + p_cdc->pl2303.serial_private.type = &pl2303_type_data[type]; + p_cdc->pl2303.serial_private.quirks |= p_cdc->pl2303.serial_private.type->quirks; + #if CFG_TUSB_DEBUG >= CFG_TUH_CDC_LOG_LEVEL && 0 // can be activated if necessary + TU_LOG(CFG_TUH_CDC_LOG_LEVEL, "PL2303 bDeviceClass = 0x%02x bMaxPacketSize0 = %u bcdUSB = 0x%04x bcdDevice = 0x%04x", + desc_dev[idx]->bDeviceClass, desc_dev[idx]->bMaxPacketSize0, desc_dev[idx]->bcdUSB, desc_dev[idx]->bcdDevice ); + uint16_t vid, pid; + TU_ASSERT_COMPLETE(tuh_vid_pid_get(p_cdc->daddr, &vid, &pid)); + TU_LOG(CFG_TUH_CDC_LOG_LEVEL, " vid = 0x%04x pid = 0x%04x supports_hx_status = %u type = %s quirks = %u", + vid, pid, p_cdc->pl2303.supports_hx_status, + p_cdc->pl2303.serial_private.type->name, p_cdc->pl2303.serial_private.quirks); + #endif + // purpose unknown, overtaken from Linux Kernel driver + if (p_cdc->pl2303.serial_private.type != &pl2303_type_data[TYPE_HXN]) { + TU_ASSERT_COMPLETE(pl2303_vendor_read(p_cdc, 0x8484, &buf, pl2303_process_config, CONFIG_PL2303_WRITE1)); + break; + } // else: continue with next step + TU_ATTR_FALLTHROUGH; + + case CONFIG_PL2303_WRITE1: + // purpose unknown, overtaken from Linux Kernel driver + if (p_cdc->pl2303.serial_private.type != &pl2303_type_data[TYPE_HXN]) { + TU_ASSERT_COMPLETE(pl2303_vendor_write(p_cdc, 0x0404, 0, pl2303_process_config, CONFIG_PL2303_READ2)); + break; + } // else: continue with next step + TU_ATTR_FALLTHROUGH; + + case CONFIG_PL2303_READ2: + // purpose unknown, overtaken from Linux Kernel driver + if (p_cdc->pl2303.serial_private.type != &pl2303_type_data[TYPE_HXN]) { + TU_ASSERT_COMPLETE(pl2303_vendor_read(p_cdc, 0x8484, &buf, pl2303_process_config, CONFIG_PL2303_READ3)); + break; + } // else: continue with next step + TU_ATTR_FALLTHROUGH; + + case CONFIG_PL2303_READ3: + // purpose unknown, overtaken from Linux Kernel driver + if (p_cdc->pl2303.serial_private.type != &pl2303_type_data[TYPE_HXN]) { + TU_ASSERT_COMPLETE(pl2303_vendor_read(p_cdc, 0x8383, &buf, pl2303_process_config, CONFIG_PL2303_READ4)); + break; + } // else: continue with next step + TU_ATTR_FALLTHROUGH; + + case CONFIG_PL2303_READ4: + // purpose unknown, overtaken from Linux Kernel driver + if (p_cdc->pl2303.serial_private.type != &pl2303_type_data[TYPE_HXN]) { + TU_ASSERT_COMPLETE(pl2303_vendor_read(p_cdc, 0x8484, &buf, pl2303_process_config, CONFIG_PL2303_WRITE2)); + break; + } // else: continue with next step + TU_ATTR_FALLTHROUGH; + + case CONFIG_PL2303_WRITE2: + // purpose unknown, overtaken from Linux Kernel driver + if (p_cdc->pl2303.serial_private.type != &pl2303_type_data[TYPE_HXN]) { + TU_ASSERT_COMPLETE(pl2303_vendor_write(p_cdc, 0x0404, 1, pl2303_process_config, CONFIG_PL2303_READ5)); + break; + } // else: continue with next step + TU_ATTR_FALLTHROUGH; + + case CONFIG_PL2303_READ5: + // purpose unknown, overtaken from Linux Kernel driver + if (p_cdc->pl2303.serial_private.type != &pl2303_type_data[TYPE_HXN]) { + TU_ASSERT_COMPLETE(pl2303_vendor_read(p_cdc, 0x8484, &buf, pl2303_process_config, CONFIG_PL2303_READ6)); + break; + } // else: continue with next step + TU_ATTR_FALLTHROUGH; + + case CONFIG_PL2303_READ6: + // purpose unknown, overtaken from Linux Kernel driver + if (p_cdc->pl2303.serial_private.type != &pl2303_type_data[TYPE_HXN]) { + TU_ASSERT_COMPLETE(pl2303_vendor_read(p_cdc, 0x8383, &buf, pl2303_process_config, CONFIG_PL2303_WRITE3)); + break; + } // else: continue with next step + TU_ATTR_FALLTHROUGH; + + case CONFIG_PL2303_WRITE3: + // purpose unknown, overtaken from Linux Kernel driver + if (p_cdc->pl2303.serial_private.type != &pl2303_type_data[TYPE_HXN]) { + TU_ASSERT_COMPLETE(pl2303_vendor_write(p_cdc, 0, 1, pl2303_process_config, CONFIG_PL2303_WRITE4)); + break; + } // else: continue with next step + TU_ATTR_FALLTHROUGH; + + case CONFIG_PL2303_WRITE4: + // purpose unknown, overtaken from Linux Kernel driver + if (p_cdc->pl2303.serial_private.type != &pl2303_type_data[TYPE_HXN]) { + TU_ASSERT_COMPLETE(pl2303_vendor_write(p_cdc, 1, 0, pl2303_process_config, CONFIG_PL2303_WRITE5)); + break; + } // else: continue with next step + TU_ATTR_FALLTHROUGH; + + case CONFIG_PL2303_WRITE5: + // purpose unknown, overtaken from Linux Kernel driver + if (p_cdc->pl2303.serial_private.type != &pl2303_type_data[TYPE_HXN]) { + if (p_cdc->pl2303.serial_private.quirks & PL2303_QUIRK_LEGACY) { + TU_ASSERT_COMPLETE(pl2303_vendor_write(p_cdc, 2, 0x24, pl2303_process_config, CONFIG_PL2303_RESET_ENDP1)); + } else { + TU_ASSERT_COMPLETE(pl2303_vendor_write(p_cdc, 2, 0x44, pl2303_process_config, CONFIG_PL2303_RESET_ENDP1)); + } + break; + } // else: continue with next step + TU_ATTR_FALLTHROUGH; + + // from here sequence overtaken from Linux Kernel function pl2303_open() + case CONFIG_PL2303_RESET_ENDP1: + // step 1 + if (p_cdc->pl2303.serial_private.quirks & PL2303_QUIRK_LEGACY) { + TU_ASSERT_COMPLETE(pl2303_clear_halt(p_cdc, PL2303_OUT_EP, pl2303_process_config, CONFIG_PL2303_RESET_ENDP2)); + } else { + /* reset upstream data pipes */ + if (p_cdc->pl2303.serial_private.type == &pl2303_type_data[TYPE_HXN]) { + TU_ASSERT_COMPLETE(pl2303_vendor_write(p_cdc, PL2303_HXN_RESET_REG, // skip CONFIG_PL2303_RESET_ENDP2, no 2nd step + PL2303_HXN_RESET_UPSTREAM_PIPE | PL2303_HXN_RESET_DOWNSTREAM_PIPE, + pl2303_process_config, CONFIG_PL2303_LINE_CODING)); + } else { + pl2303_vendor_write(p_cdc, 8, 0, pl2303_process_config, CONFIG_PL2303_RESET_ENDP2); + } + } + break; + + case CONFIG_PL2303_RESET_ENDP2: + // step 2 + if (p_cdc->pl2303.serial_private.quirks & PL2303_QUIRK_LEGACY) { + TU_ASSERT_COMPLETE(pl2303_clear_halt(p_cdc, PL2303_IN_EP, pl2303_process_config, CONFIG_PL2303_LINE_CODING)); + } else { + /* reset upstream data pipes */ + if (p_cdc->pl2303.serial_private.type == &pl2303_type_data[TYPE_HXN]) { + // here nothing to do, only structure of previous step overtaken for better reading and comparison + } else { + TU_ASSERT_COMPLETE(pl2303_vendor_write(p_cdc, 9, 0, pl2303_process_config, CONFIG_PL2303_LINE_CODING)); + } + } + break; + + // from here sequence overtaken from Linux Kernel function pl2303_set_termios() + // unnecessary pl2303_get_line_request() is skipped due to a stall + case CONFIG_PL2303_LINE_CODING: + #ifdef CFG_TUH_CDC_LINE_CODING_ON_ENUM + p_cdc->requested_line_coding = (cdc_line_coding_t) CFG_TUH_CDC_LINE_CODING_ON_ENUM; + TU_ASSERT_COMPLETE( pl2303_set_line_request(p_cdc, pl2303_internal_control_complete, CONFIG_PL2303_MODEM_CONTROL)); + break; + #else + TU_ATTR_FALLTHROUGH; + #endif + + case CONFIG_PL2303_MODEM_CONTROL: + #ifdef CFG_TUH_CDC_LINE_CONTROL_ON_ENUM + p_cdc->requested_line_state = CFG_TUH_CDC_LINE_CONTROL_ON_ENUM; + TU_ASSERT_COMPLETE(pl2303_set_control_lines(p_cdc, pl2303_internal_control_complete, CONFIG_PL2303_FLOW_CTRL_READ)); + break; + #else + TU_ATTR_FALLTHROUGH; + #endif + + case CONFIG_PL2303_FLOW_CTRL_READ: + // read flow control register for modify & write back in next step + if (p_cdc->pl2303.serial_private.type == &pl2303_type_data[TYPE_HXN]) { + TU_ASSERT_COMPLETE(pl2303_vendor_read(p_cdc, PL2303_HXN_FLOWCTRL_REG, &buf, pl2303_process_config, + CONFIG_PL2303_FLOW_CTRL_WRITE)); + } else { + TU_ASSERT_COMPLETE(pl2303_vendor_read(p_cdc, 0, &buf, pl2303_process_config, CONFIG_PL2303_FLOW_CTRL_WRITE)); + } + break; + + case CONFIG_PL2303_FLOW_CTRL_WRITE: + // no flow control + buf = xfer->buffer[0]; + if (p_cdc->pl2303.serial_private.type == &pl2303_type_data[TYPE_HXN]) { + buf &= (uint8_t) ~PL2303_HXN_FLOWCTRL_MASK; + buf |= PL2303_HXN_FLOWCTRL_NONE; + TU_ASSERT_COMPLETE(pl2303_vendor_write(p_cdc, PL2303_HXN_FLOWCTRL_REG, buf, pl2303_process_config, + CONFIG_PL2303_COMPLETE)); + } else { + buf &= (uint8_t) ~PL2303_FLOWCTRL_MASK; + TU_ASSERT_COMPLETE(pl2303_vendor_write(p_cdc, 0, buf, pl2303_process_config, CONFIG_PL2303_COMPLETE)); + } + break; + + case CONFIG_PL2303_COMPLETE: + set_config_complete(idx, 0, true); + break; + + default: + set_config_complete(idx, 0, false); + break; + } +} + +//------------- Helper -------------// + +static int8_t pl2303_detect_type(cdch_interface_t * p_cdc, uint8_t const idx, uint8_t step, + tuh_xfer_cb_t complete_cb, uintptr_t user_data ) +{ + /* + * Legacy PL2303H, variants 0 and 1 (difference unknown). + */ + if (desc_dev[idx]->bDeviceClass == 0x02) { + return TYPE_H; /* variant 0 */ + } + + if (desc_dev[idx]->bMaxPacketSize0 != 0x40) { + if (desc_dev[idx]->bDeviceClass == 0x00 || desc_dev[idx]->bDeviceClass == 0xff) { + return TYPE_H; /* variant 1 */ + } + return TYPE_H; /* variant 0 */ + } + + switch (desc_dev[idx]->bcdUSB) { + case 0x101: + /* USB 1.0.1? Let's assume they meant 1.1... */ + TU_ATTR_FALLTHROUGH; + case 0x110: + switch (desc_dev[idx]->bcdDevice) { + case 0x300: + return TYPE_HX; + case 0x400: + return TYPE_HXD; + default: + return TYPE_HX; + } + break; + case 0x200: + switch (desc_dev[idx]->bcdDevice) { + case 0x100: /* GC */ + case 0x105: + return TYPE_HXN; + case 0x300: /* GT / TA */ + if (step == 1) { + // step 1 trigger pl2303_supports_hx_status() request + TU_ASSERT(pl2303_supports_hx_status (p_cdc, complete_cb, user_data), PL2303_DETECT_TYPE_FAILED); + return PL2303_SUPPORTS_HX_STATUS_TRIGGERED; + } else { + // step 2 use supports_hx_status + if (p_cdc->pl2303.supports_hx_status) { + return TYPE_TA; + } + } + TU_ATTR_FALLTHROUGH; + case 0x305: + case 0x400: /* GL */ + case 0x405: + return TYPE_HXN; + case 0x500: /* GE / TB */ + if (step == 1) { + // step 1 trigger pl2303_supports_hx_status() request + TU_ASSERT(pl2303_supports_hx_status (p_cdc, complete_cb, user_data), PL2303_DETECT_TYPE_FAILED); + return PL2303_SUPPORTS_HX_STATUS_TRIGGERED; + } else { + // step 2 use supports_hx_status + if (p_cdc->pl2303.supports_hx_status) { + return TYPE_TB; + } + } + TU_ATTR_FALLTHROUGH; + case 0x505: + case 0x600: /* GS */ + case 0x605: + case 0x700: /* GR */ + case 0x705: + return TYPE_HXN; + default: + break; + } + break; + default: break; + } + + TU_LOG_P_CDC("unknown device type bcdUSB = 0x%04x", desc_dev[idx]->bcdUSB); + + return PL2303_DETECT_TYPE_FAILED; +} + +/* + * Returns the nearest supported baud rate that can be set directly without + * using divisors. + */ +static uint32_t pl2303_get_supported_baud_rate(uint32_t baud) +{ + static const uint32_t baud_sup[] = { + 75, 150, 300, 600, 1200, 1800, 2400, 3600, 4800, 7200, 9600, + 14400, 19200, 28800, 38400, 57600, 115200, 230400, 460800, + 614400, 921600, 1228800, 2457600, 3000000, 6000000 + }; + + uint8_t i; + for (i = 0; i < TU_ARRAY_SIZE(baud_sup); ++i) { + if (baud_sup[i] > baud) { + break; + } + } + + if (i == TU_ARRAY_SIZE(baud_sup)) { + baud = baud_sup[i - 1]; + } else if (i > 0 && (baud_sup[i] - baud) > (baud - baud_sup[i - 1])) { + baud = baud_sup[i - 1]; + } else { + baud = baud_sup[i]; + } + + return baud; +} + +/* + * NOTE: If unsupported baud rates are set directly, the PL2303 seems to + * use 9600 baud. + */ +static uint32_t pl2303_encode_baud_rate_direct(uint8_t buf[PL2303_LINE_CODING_BAUDRATE_BUFSIZE], uint32_t baud) +{ + uint32_t baud_le = tu_htole32(baud); + buf[0] = (uint8_t) ( baud_le & 0xff); + buf[1] = (uint8_t) ((baud_le >> 8) & 0xff); + buf[2] = (uint8_t) ((baud_le >> 16) & 0xff); + buf[3] = (uint8_t) ((baud_le >> 24) & 0xff); + + return baud; +} + +static uint32_t pl2303_encode_baud_rate_divisor(uint8_t buf[PL2303_LINE_CODING_BAUDRATE_BUFSIZE], uint32_t baud) +{ + uint32_t baseline, mantissa, exponent; + + /* + * Apparently the formula is: + * baudrate = 12M * 32 / (mantissa * 4^exponent) + * where + * mantissa = buf[8:0] + * exponent = buf[11:9] + */ + baseline = 12000000 * 32; + mantissa = baseline / baud; + if (mantissa == 0) + mantissa = 1; /* Avoid dividing by zero if baud > 32 * 12M. */ + exponent = 0; + while (mantissa >= 512) { + if (exponent < 7) { + mantissa >>= 2; /* divide by 4 */ + exponent++; + } else { + /* Exponent is maxed. Trim mantissa and leave. */ + mantissa = 511; + break; + } + } + + buf[3] = 0x80; + buf[2] = 0; + buf[1] = (uint8_t) ((exponent << 1 | mantissa >> 8) & 0xff); + buf[0] = (uint8_t) (mantissa & 0xff); + + /* Calculate and return the exact baud rate. */ + baud = (baseline / mantissa) >> (exponent << 1); + + return baud; +} + +static uint32_t pl2303_encode_baud_rate_divisor_alt(uint8_t buf[PL2303_LINE_CODING_BAUDRATE_BUFSIZE], uint32_t baud) +{ + uint32_t baseline, mantissa, exponent; + + /* + * Apparently, for the TA version the formula is: + * baudrate = 12M * 32 / (mantissa * 2^exponent) + * where + * mantissa = buf[10:0] + * exponent = buf[15:13 16] + */ + baseline = 12000000 * 32; + mantissa = baseline / baud; + if (mantissa == 0) { + mantissa = 1; /* Avoid dividing by zero if baud > 32 * 12M. */ + } + exponent = 0; + while (mantissa >= 2048) { + if (exponent < 15) { + mantissa >>= 1; /* divide by 2 */ + exponent++; + } else { + /* Exponent is maxed. Trim mantissa and leave. */ + mantissa = 2047; + break; + } + } + + buf[3] = 0x80; + buf[2] = (uint8_t) (exponent & 0x01); + buf[1] = (uint8_t) (((exponent & (uint32_t) ~0x01) << 4 | mantissa >> 8 ) & 0xff); + buf[0] = (uint8_t) (mantissa & 0xff); + + /* Calculate and return the exact baud rate. */ + baud = (baseline / mantissa) >> exponent; + + return baud; +} + +static bool pl2303_encode_baud_rate(cdch_interface_t * p_cdc, uint8_t buf[PL2303_LINE_CODING_BAUDRATE_BUFSIZE]) +{ + uint32_t baud = p_cdc->requested_line_coding.bit_rate; + uint32_t baud_sup; + + TU_VERIFY(baud && baud <= p_cdc->pl2303.serial_private.type->max_baud_rate); + /* + * Use direct method for supported baud rates, otherwise use divisors. + * Newer chip types do not support divisor encoding. + */ + if (p_cdc->pl2303.serial_private.type->no_divisors) { + baud_sup = baud; + } else { + baud_sup = pl2303_get_supported_baud_rate(baud); + } + + if (baud == baud_sup) { + baud = pl2303_encode_baud_rate_direct(buf, baud); + } else if (p_cdc->pl2303.serial_private.type->alt_divisors) { + baud = pl2303_encode_baud_rate_divisor_alt(buf, baud); + } else { + baud = pl2303_encode_baud_rate_divisor(buf, baud); + } + TU_LOG_P_CDC("real baudrate = %lu", baud); + + return true; +} + +#endif // CFG_TUH_CDC_PL2303 + #endif diff --git a/src/class/cdc/serial/pl2303.h b/src/class/cdc/serial/pl2303.h new file mode 100644 index 000000000..bf264191b --- /dev/null +++ b/src/class/cdc/serial/pl2303.h @@ -0,0 +1,172 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2024 Heiko Kuester + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + * This file is part of the TinyUSB stack. + */ + +#ifndef _PL2303_H_ +#define _PL2303_H_ + +#include +#include + +// There is no official documentation for the PL2303 chips. +// Reference can be found +// - https://github.com/torvalds/linux/blob/master/drivers/usb/serial/pl2303.h and +// https://github.com/torvalds/linux/blob/master/drivers/usb/serial/pl2303.c +// - https://github.com/freebsd/freebsd-src/blob/main/sys/dev/usb/serial/uplcom.c + +/* quirks */ +#define PL2303_QUIRK_UART_STATE_IDX0 1 +#define PL2303_QUIRK_LEGACY 2 +#define PL2303_QUIRK_ENDPOINT_HACK 4 + +/* requests and bits */ +#define PL2303_SET_LINE_REQUEST_TYPE 0x21 // class request host to device interface +#define PL2303_SET_LINE_REQUEST 0x20 // dec 32 + +#define PL2303_SET_CONTROL_REQUEST_TYPE 0x21 // class request host to device interface +#define PL2303_SET_CONTROL_REQUEST 0x22 // dec 34 +#define PL2303_CONTROL_DTR 0x01 // dec 1 +#define PL2303_CONTROL_RTS 0x02 // dec 2 + +#define PL2303_BREAK_REQUEST_TYPE 0x21 // class request host to device interface +#define PL2303_BREAK_REQUEST 0x23 // dec 35 +#define PL2303_BREAK_ON 0xffff +#define PL2303_BREAK_OFF 0x0000 + +#define PL2303_GET_LINE_REQUEST_TYPE 0xa1 // class request device to host interface +#define PL2303_GET_LINE_REQUEST 0x21 // dec 33 + +#define PL2303_VENDOR_WRITE_REQUEST_TYPE 0x40 // vendor request host to device interface +#define PL2303_VENDOR_WRITE_REQUEST 0x01 // dec 1 +#define PL2303_VENDOR_WRITE_NREQUEST 0x80 // dec 128 + +#define PL2303_VENDOR_READ_REQUEST_TYPE 0xc0 // vendor request device to host interface +#define PL2303_VENDOR_READ_REQUEST 0x01 // dec 1 +#define PL2303_VENDOR_READ_NREQUEST 0x81 // dec 129 + +#define PL2303_UART_STATE_INDEX 8 +#define PL2303_UART_STATE_MSR_MASK 0x8b +#define PL2303_UART_STATE_TRANSIENT_MASK 0x74 +#define PL2303_UART_DCD 0x01 +#define PL2303_UART_DSR 0x02 +#define PL2303_UART_BREAK_ERROR 0x04 +#define PL2303_UART_RING 0x08 +#define PL2303_UART_FRAME_ERROR 0x10 +#define PL2303_UART_PARITY_ERROR 0x20 +#define PL2303_UART_OVERRUN_ERROR 0x40 +#define PL2303_UART_CTS 0x80 + +#define PL2303_FLOWCTRL_MASK 0xf0 + +#define PL2303_CLEAR_HALT_REQUEST_TYPE 0x02 // standard request host to device endpoint + +/* registers via vendor read/write requests */ +#define PL2303_READ_TYPE_HX_STATUS 0x8080 + +#define PL2303_HXN_RESET_REG 0x07 +#define PL2303_HXN_RESET_UPSTREAM_PIPE 0x02 +#define PL2303_HXN_RESET_DOWNSTREAM_PIPE 0x01 + +#define PL2303_HXN_FLOWCTRL_REG 0x0a +#define PL2303_HXN_FLOWCTRL_MASK 0x1c +#define PL2303_HXN_FLOWCTRL_NONE 0x1c +#define PL2303_HXN_FLOWCTRL_RTS_CTS 0x18 +#define PL2303_HXN_FLOWCTRL_XON_XOFF 0x0c + +/* type data */ +enum pl2303_type { + TYPE_H, + TYPE_HX, + TYPE_TA, + TYPE_TB, + TYPE_HXD, + TYPE_HXN, + TYPE_COUNT +}; + +struct pl2303_type_data { + uint8_t const *name; + uint32_t const max_baud_rate; + uint8_t const quirks; + uint16_t const no_autoxonxoff:1; + uint16_t const no_divisors:1; + uint16_t const alt_divisors:1; +}; + +#define PL2303_TYPE_DATA \ + [TYPE_H] = { \ + .name = (uint8_t const*)"H", \ + .max_baud_rate = 1228800, \ + .quirks = PL2303_QUIRK_LEGACY, \ + .no_autoxonxoff = true, \ + }, \ + [TYPE_HX] = { \ + .name = (uint8_t const*)"HX", \ + .max_baud_rate = 6000000, \ + }, \ + [TYPE_TA] = { \ + .name = (uint8_t const*)"TA", \ + .max_baud_rate = 6000000, \ + .alt_divisors = true, \ + }, \ + [TYPE_TB] = { \ + .name = (uint8_t const*)"TB", \ + .max_baud_rate = 12000000, \ + .alt_divisors = true, \ + }, \ + [TYPE_HXD] = { \ + .name = (uint8_t const*)"HXD", \ + .max_baud_rate = 12000000, \ + }, \ + [TYPE_HXN] = { \ + .name = (uint8_t const*)"G (HXN)", \ + .max_baud_rate = 12000000, \ + .no_divisors = true, \ + } + +/* private data types */ +struct pl2303_serial_private { + const struct pl2303_type_data* type; + uint8_t quirks; +}; + +typedef struct TU_ATTR_PACKED { + struct pl2303_serial_private serial_private; + bool supports_hx_status; +} pl2303_private_t; + +/* buffer sizes for line coding data */ +#define PL2303_LINE_CODING_BUFSIZE 7 +#define PL2303_LINE_CODING_BAUDRATE_BUFSIZE 4 + +/* bulk endpoints */ +#define PL2303_OUT_EP 0x02 +#define PL2303_IN_EP 0x83 + +/* return values of pl2303_detect_type() */ +#define PL2303_SUPPORTS_HX_STATUS_TRIGGERED -1 +#define PL2303_DETECT_TYPE_FAILED -2 + +#endif /* _PL2303_H_ */ diff --git a/src/tusb_option.h b/src/tusb_option.h index 281341685..f023b490a 100644 --- a/src/tusb_option.h +++ b/src/tusb_option.h @@ -504,6 +504,24 @@ { 0x9986, 0x7523 } /* overtaken from Linux Kernel driver /drivers/usb/serial/ch341.c */ #endif +#ifndef CFG_TUH_CDC_PL2303 + // PL2303 is not part of CDC class, only to re-use CDC driver API + #define CFG_TUH_CDC_PL2303 0 +#endif + +#ifndef CFG_TUH_CDC_PL2303_VID_PID_QUIRKS_LIST + // List of product IDs that can use the PL2303 CDC driver + #define CFG_TUH_CDC_PL2303_VID_PID_LIST \ + { 0x067b, 0x2303 }, /* initial 2303 */ \ + { 0x067b, 0x2304 }, /* TB */ \ + { 0x067b, 0x23a3 }, /* GC */ \ + { 0x067b, 0x23b3 }, /* GB */ \ + { 0x067b, 0x23c3 }, /* GT */ \ + { 0x067b, 0x23d3 }, /* GL */ \ + { 0x067b, 0x23e3 }, /* GE */ \ + { 0x067b, 0x23f3 } /* GS */ +#endif + #ifndef CFG_TUH_HID #define CFG_TUH_HID 0 #endif