From f221c0fb6683fc552febbb9a52300d66f031d275 Mon Sep 17 00:00:00 2001 From: hathach Date: Wed, 17 Jan 2024 14:45:09 +0700 Subject: [PATCH] more clean up --- src/class/cdc/cdc_host.c | 28 ++++++++++------------------ src/class/cdc/serial/ch34x.h | 13 +++++++++++++ 2 files changed, 23 insertions(+), 18 deletions(-) diff --git a/src/class/cdc/cdc_host.c b/src/class/cdc/cdc_host.c index 4cecc79a1..faee062cf 100644 --- a/src/class/cdc/cdc_host.c +++ b/src/class/cdc/cdc_host.c @@ -670,6 +670,7 @@ bool cdch_open(uint8_t rhport, uint8_t daddr, tusb_desc_interface_t const *itf_d } static void set_config_complete(cdch_interface_t * p_cdc, uint8_t idx, uint8_t itf_num) { + TU_LOG_DRV("CDCh Set Configure complete\r\n"); if (tuh_cdc_mount_cb) tuh_cdc_mount_cb(idx); // Prepare for incoming data @@ -1176,8 +1177,6 @@ static void cp210x_process_config(tuh_xfer_t* xfer) { #if CFG_TUH_CDC_CH34X -#define CH34X_LOGS false - enum { CONFIG_CH34X_READ_VERSION = 0, CONFIG_CH34X_SERIAL_INIT, @@ -1247,14 +1246,13 @@ static bool ch34x_set_request(cdch_interface_t* p_cdc, uint8_t direction, uint8_ return tuh_control_xfer(&xfer); } -static bool ch34x_control_out(cdch_interface_t* p_cdc, uint8_t request, uint16_t value, uint16_t index, - tuh_xfer_cb_t complete_cb, uintptr_t user_data) { - return ch34x_set_request(p_cdc, TUSB_DIR_OUT, request, value, index, /* buffer */ NULL, /* length */ 0, complete_cb, user_data); +static inline bool ch34x_control_out(cdch_interface_t* p_cdc, uint8_t request, uint16_t value, uint16_t index, + tuh_xfer_cb_t complete_cb, uintptr_t user_data) { + return ch34x_set_request(p_cdc, TUSB_DIR_OUT, request, value, index, NULL, 0, complete_cb, user_data); } -static bool ch34x_control_in(cdch_interface_t* p_cdc, uint8_t request, uint16_t value, uint16_t index, - uint8_t* buffer, uint16_t buffersize, tuh_xfer_cb_t complete_cb, - uintptr_t user_data) { +static inline bool ch34x_control_in(cdch_interface_t* p_cdc, uint8_t request, uint16_t value, uint16_t index, + uint8_t* buffer, uint16_t buffersize, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { return ch34x_set_request(p_cdc, TUSB_DIR_IN, request, value, index, buffer, buffersize, complete_cb, user_data); } @@ -1425,27 +1423,24 @@ static void ch34x_process_config(tuh_xfer_t* xfer) { uint8_t const idx = tuh_cdc_itf_get_index(xfer->daddr, itf_num); cdch_interface_t* p_cdc = get_itf(idx); cdc_line_coding_t const line_coding = CFG_TUH_CDC_LINE_CODING_ON_ENUM_CH34X; - uint8_t buffer[2]; + uint8_t buffer[2]; // TODO remove TU_ASSERT (p_cdc,); switch (state) { case CONFIG_CH34X_READ_VERSION: // request version read - #if CH34X_LOGS - TU_LOG_DRV ( "[%u] CDCh CH34x Process Config started\r\n", p_cdc->daddr ); - #endif + TU_LOG_DRV("[%u] CDCh CH34x attempt to read version\r\n", p_cdc->daddr); TU_ASSERT (ch34x_control_in(p_cdc, CH34X_REQ_READ_VERSION, 0, 0, buffer, 2, ch34x_process_config, CONFIG_CH34X_SERIAL_INIT),); break; case CONFIG_CH34X_SERIAL_INIT: { // handle version read data, request to init CH34x with line_coding and baudrate uint8_t version = xfer->buffer[0]; - #if CH34X_LOGS - TU_LOG_DRV("[%u] CDCh CH34x Chip version=%02x\r\n", p_cdc->daddr, version); - #endif + TU_LOG_DRV("[%u] CDCh CH34x Chip version = %02x\r\n", p_cdc->daddr, version); // only versions >= 0x30 are tested, below 0x30 seems having other programming, see WCH vendor, linux kernel and FreeBSD drivers TU_ASSERT (version >= 0x30,); uint8_t factor, divisor; TU_ASSERT (ch34x_get_factor_divisor(line_coding.bit_rate, &factor, &divisor),); uint8_t lcr = CH34X_LCR_ENABLE_RX | CH34X_LCR_ENABLE_TX; + switch (line_coding.data_bits) { case 5: lcr |= CH34X_LCR_CS5; @@ -1503,9 +1498,6 @@ static void ch34x_process_config(tuh_xfer_t* xfer) { case CONFIG_CH34X_COMPLETE: p_cdc->line_coding = line_coding; // CONFIG_CH34X_SERIAL_INIT not handled by ch34x_control_complete - #if CH34X_LOGS - TU_LOG_DRV("CDCh CH34x Process Config Complete\r\n"); - #endif set_config_complete(p_cdc, idx, itf_num); break; diff --git a/src/class/cdc/serial/ch34x.h b/src/class/cdc/serial/ch34x.h index 557e093a9..54b5b3560 100644 --- a/src/class/cdc/serial/ch34x.h +++ b/src/class/cdc/serial/ch34x.h @@ -27,6 +27,10 @@ #ifndef _CH34X_H_ #define _CH34X_H_ +// There is no official documentation for the CH34x chips. Reference can be found +// - https://github.com/WCHSoftGroup/ch341ser_linux +// - https://github.com/torvalds/linux/blob/master/drivers/usb/serial/ch341.c + // set line_coding @ enumeration #ifdef CFG_TUH_CDC_LINE_CODING_ON_ENUM #define CFG_TUH_CDC_LINE_CODING_ON_ENUM_CH34X CFG_TUH_CDC_LINE_CODING_ON_ENUM @@ -41,6 +45,15 @@ #define CH34X_REQ_SERIAL_INIT 0xA1 // dec 161 #define CH34X_REQ_MODEM_CTRL 0xA4 // dev 164 +#define CH34X_REG_BREAK 0x05 +#define CH34X_REG_PRESCALER 0x12 +#define CH34X_REG_DIVISOR 0x13 +#define CH34X_REG_LCR 0x18 +#define CH34X_REG_LCR2 0x25 +#define CH34X_REG_MCR_MSR 0x06 +#define CH34X_REG_MCR_MSR2 0x07 +#define CH34X_NBREAK_BITS 0x01 + // modem control bits #define CH34X_BIT_RTS ( 1 << 6 ) #define CH34X_BIT_DTR ( 1 << 5 )