usb: add cdc-acm serial and write to flash
This commit is contained in:
Dien-Nhung Nguyen-Phu
1
Makefile
1
Makefile
@@ -63,6 +63,7 @@ src/usb/ctrl.c \
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src/usb/debug.c \
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src/usb/dev.c \
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src/usb/composite/hiddev.c \
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src/usb/composite/cdc-serial.c \
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# ASM sources
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ASM_SOURCES = \
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@@ -175,6 +175,7 @@ int main()
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debug_init();
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PRINT("\nDebug console is on UART%d\n", DEBUG);
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cdc_onWrite(usb_receive);
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hiddev_onWrite(usb_receive);
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usb_start();
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202
src/usb/composite/cdc-serial.c
Normal file
202
src/usb/composite/cdc-serial.c
Normal file
@@ -0,0 +1,202 @@
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#include <stdint.h>
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#include <memory.h>
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#include "CH58x_common.h"
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#include "../utils.h"
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#include "../debug.h"
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#define NOTI_EP_NUM (2)
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#define DATA_EP_NUM (3)
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#define ACM_IF_NUM (1)
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#define USB_DESCTYPE_CS_INTERFACE 0x24
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static __attribute__((aligned(4))) uint8_t noti_ep_buf[64 + 64];
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static uint8_t *const noti_ep_out = noti_ep_buf;
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static uint8_t *const noti_ep_in = noti_ep_buf + 64;
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static __attribute__((aligned(4))) uint8_t data_ep_buf[64 + 64];
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static uint8_t *const data_ep_out = data_ep_buf;
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static uint8_t *const data_ep_in = data_ep_buf + 64;
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static void (*on_write)(uint8_t *buf, uint16_t len);
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/* CDC Communication interface */
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static USB_ITF_DESCR acm_if_desc = {
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.bLength = sizeof(USB_ITF_DESCR),
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.bDescriptorType = USB_DESCR_TYP_INTERF,
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.bInterfaceNumber = ACM_IF_NUM,
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.bAlternateSetting = 0,
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.bNumEndpoints = 3, // A Notification and RX/TX Endpoint
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.bInterfaceClass = 0x02, /* Communications and CDC Control */
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.bInterfaceSubClass = 2, /* ACM subclass */
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.bInterfaceProtocol = 1, /* AT Command V.250 protocol */
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.iInterface = 0 /* No string descriptor */
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};
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/* Header Functional descriptor */
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static uint8_t header_func_desc[] = {
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5, /* bLength */
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USB_DESCTYPE_CS_INTERFACE, /* bDescriptortype */
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0x00, /* bDescriptorsubtype, HEADER */
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0x10, 0x01, /* bcdCDC */
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};
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/* ACM Functional descriptor */
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static uint8_t acm_func_desc[] = {
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4, /* bLength */
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USB_DESCTYPE_CS_INTERFACE, /* bDescriptortype */
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0x02, /* bDescriptorsubtype, ABSTRACT CONTROL MANAGEMENT */
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0x02, /* bmCapabilities: Supports subset of ACM commands */
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};
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/* Call Management Functional descriptor */
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static uint8_t callmgr_func_desc[] = {
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4, /* bLength */
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USB_DESCTYPE_CS_INTERFACE, /* bDescriptortype */
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0x01, /* bDescriptorsubtype, CALL MANAGEMENT */
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0x03, /* bmCapabilities, DIY */
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};
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/* Notification Endpoint descriptor */
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static USB_ENDP_DESCR noti_ep_desc = {
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.bLength = sizeof(USB_ENDP_DESCR),
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.bDescriptorType = USB_DESCR_TYP_ENDP,
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.bEndpointAddress = 0x80 | NOTI_EP_NUM, /* IN endpoint */
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.bmAttributes = 0x03, /* Interrupt transfer */
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.wMaxPacketSize = 64, /* bytes */
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.bInterval = 0xff
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};
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/* Data TX Endpoint descriptor */
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static USB_ENDP_DESCR tx_ep_desc = {
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.bLength = sizeof(USB_ENDP_DESCR),
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.bDescriptorType = USB_DESCR_TYP_ENDP,
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.bEndpointAddress = 0x80 | DATA_EP_NUM, /* IN endpoint */
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.bmAttributes = 0x02, /* Bulk */
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.wMaxPacketSize = MAX_PACKET_SIZE, /* bytes */
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.bInterval = 0xff
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};
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/* Data RX Endpoint descriptor */
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static USB_ENDP_DESCR rx_ep_desc = {
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.bLength = sizeof(USB_ENDP_DESCR),
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.bDescriptorType = USB_DESCR_TYP_ENDP,
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.bEndpointAddress = DATA_EP_NUM, /* OUT endpoint */
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.bmAttributes = 0x02, /* Bulk */
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.wMaxPacketSize = MAX_PACKET_SIZE, /* bytes */
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.bInterval = 0xff
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};
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static void cdc_request_handler(USB_SETUP_REQ * request)
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{
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_TRACE();
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// Handle CDC Class Request here
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}
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static void noti_ep_handler()
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{
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_TRACE();
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// Handle Subclass Request here
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}
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static volatile uint16_t transferred;
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static void data_ep_handler()
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{
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_TRACE();
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static int tog;
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uint8_t token = R8_USB_INT_ST & MASK_UIS_TOKEN;
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switch(token) {
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case UIS_TOKEN_OUT:
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if (on_write)
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on_write(data_ep_out, R8_USB_RX_LEN);
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tog = !tog;
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set_handshake(DATA_EP_NUM, USB_ACK, tog, 0);
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break;
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case UIS_TOKEN_IN:
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if (transferred == 0) {
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transferred = 1;
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} else {
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set_handshake(DATA_EP_NUM, USB_NAK, 1, 0);
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}
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break;
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default:
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break;
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}
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}
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// In case we want to send something to the host,
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// or want to see the log over ttyACMx
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void cdc_fill_IN(uint8_t *buf, uint8_t len)
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{
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if (len > tx_ep_desc.wMaxPacketSize)
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return;
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static int tog;
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memcpy(data_ep_in, buf, len);
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set_handshake(DATA_EP_NUM, USB_ACK, tog, len);
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tog = !tog;
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transferred = 0;
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}
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static int wait_until_sent(uint16_t timeout_ms)
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{
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while(timeout_ms--) {
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if (transferred) {
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return 0;
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}
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DelayMs(1);
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}
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return -1;
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}
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int cdc_tx_poll(uint8_t *buf, int len, uint16_t timeout_ms)
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{
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int i = 0;
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while (len > tx_ep_desc.wMaxPacketSize) {
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cdc_fill_IN(buf + i, tx_ep_desc.wMaxPacketSize);
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if (wait_until_sent(timeout_ms))
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return -1;
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i += tx_ep_desc.wMaxPacketSize;
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len -= tx_ep_desc.wMaxPacketSize;
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}
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cdc_fill_IN(buf + i, len);
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if (wait_until_sent(timeout_ms))
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return -1;
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return 0;
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}
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void cdc_onWrite(void (*cb)(uint8_t *buf, uint16_t len))
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{
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on_write = cb;
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}
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void cdc_acm_init()
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{
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cfg_desc_append(&acm_if_desc);
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cfg_desc_append(header_func_desc);
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cfg_desc_append(acm_func_desc);
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cfg_desc_append(callmgr_func_desc);
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cfg_desc_append(¬i_ep_desc);
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cfg_desc_append(&rx_ep_desc);
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cfg_desc_append(&tx_ep_desc);
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if_cb_register(ACM_IF_NUM, cdc_request_handler);
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ep_cb_register(NOTI_EP_NUM, noti_ep_handler);
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ep_cb_register(DATA_EP_NUM, data_ep_handler);
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dma_register(NOTI_EP_NUM, noti_ep_buf);
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dma_register(DATA_EP_NUM, data_ep_buf);
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}
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@@ -125,6 +125,8 @@ void usb_start() {
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for the first interface (not the interface number) */
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hiddev_init();
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cdc_acm_init();
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init();
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PFIC_EnableIRQ(USB_IRQn);
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}
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@@ -3,6 +3,10 @@
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#include <stdint.h>
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void cdc_fill_IN(uint8_t *buf, uint8_t len);
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int cdc_tx_poll(uint8_t *buf, int len, uint16_t timeout_ms);
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void cdc_onWrite(void (*cb)(uint8_t *buf, uint16_t len));
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void hiddev_fill_IN(uint8_t *buf, uint8_t len);
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int hiddev_tx_poll(uint8_t *buf, int len, uint16_t timeout_ms);
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void hiddev_onWrite(void (*cb)(uint8_t *buf, uint16_t len));
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