From bcce98da54b047a15ef0abf41e0c7794f29f0439 Mon Sep 17 00:00:00 2001 From: Uwe Hermann Date: Thu, 30 Dec 2010 01:52:44 +0100 Subject: Move STM32 examples to examples/stm32 subdir. --- examples/stm32/stm32-h103/usb_cdcacm/Makefile | 23 +++ examples/stm32/stm32-h103/usb_cdcacm/README | 7 + examples/stm32/stm32-h103/usb_cdcacm/cdcacm.c | 244 +++++++++++++++++++++++++ examples/stm32/stm32-h103/usb_cdcacm/cdcacm.ld | 32 ++++ 4 files changed, 306 insertions(+) create mode 100644 examples/stm32/stm32-h103/usb_cdcacm/Makefile create mode 100644 examples/stm32/stm32-h103/usb_cdcacm/README create mode 100644 examples/stm32/stm32-h103/usb_cdcacm/cdcacm.c create mode 100644 examples/stm32/stm32-h103/usb_cdcacm/cdcacm.ld (limited to 'examples/stm32/stm32-h103/usb_cdcacm') diff --git a/examples/stm32/stm32-h103/usb_cdcacm/Makefile b/examples/stm32/stm32-h103/usb_cdcacm/Makefile new file mode 100644 index 0000000..ab55ba2 --- /dev/null +++ b/examples/stm32/stm32-h103/usb_cdcacm/Makefile @@ -0,0 +1,23 @@ +## +## This file is part of the libopenstm32 project. +## +## Copyright (C) 2009 Uwe Hermann +## +## This program is free software: you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation, either version 3 of the License, or +## (at your option) any later version. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with this program. If not, see . +## + +BINARY = cdcacm + +include ../../Makefile.include + diff --git a/examples/stm32/stm32-h103/usb_cdcacm/README b/examples/stm32/stm32-h103/usb_cdcacm/README new file mode 100644 index 0000000..2f1ee4b --- /dev/null +++ b/examples/stm32/stm32-h103/usb_cdcacm/README @@ -0,0 +1,7 @@ +------------------------------------------------------------------------------ +README +------------------------------------------------------------------------------ + +This example implements a USB CDC-ACM device (aka Virtual Serial Port) +to demonstrate the use of the USB device stack. + diff --git a/examples/stm32/stm32-h103/usb_cdcacm/cdcacm.c b/examples/stm32/stm32-h103/usb_cdcacm/cdcacm.c new file mode 100644 index 0000000..305ad43 --- /dev/null +++ b/examples/stm32/stm32-h103/usb_cdcacm/cdcacm.c @@ -0,0 +1,244 @@ +/* + * This file is part of the libopenstm32 project. + * + * Copyright (C) 2010 Gareth McMullin + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include +#include +#include +#include +#include + +static const struct usb_device_descriptor dev = { + .bLength = USB_DT_DEVICE_SIZE, + .bDescriptorType = USB_DT_DEVICE, + .bcdUSB = 0x0200, + .bDeviceClass = USB_CLASS_CDC, + .bDeviceSubClass = 0, + .bDeviceProtocol = 0, + .bMaxPacketSize0 = 64, + .idVendor = 0x0483, + .idProduct = 0x5740, + .bcdDevice = 0x0200, + .iManufacturer = 1, + .iProduct = 2, + .iSerialNumber = 3, + .bNumConfigurations = 1, +}; + +/* This notification endpoint isn't implemented. According to CDC spec its + * optional, but its absence causes a NULL pointer dereference in Linux cdc_acm + * driver. */ +static const struct usb_endpoint_descriptor comm_endp[] = {{ + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = 0x83, + .bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT, + .wMaxPacketSize = 16, + .bInterval = 255, +}}; + +static const struct usb_endpoint_descriptor data_endp[] = {{ + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = 0x01, + .bmAttributes = USB_ENDPOINT_ATTR_BULK, + .wMaxPacketSize = 64, + .bInterval = 1, +}, { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + .bEndpointAddress = 0x82, + .bmAttributes = USB_ENDPOINT_ATTR_BULK, + .wMaxPacketSize = 64, + .bInterval = 1, +}}; + +static const struct { + struct usb_cdc_header_descriptor header; + struct usb_cdc_call_management_descriptor call_mgmt; + struct usb_cdc_acm_descriptor acm; + struct usb_cdc_union_descriptor cdc_union; +} __attribute__((packed)) cdcacm_functional_descriptors = { + .header = { + .bFunctionLength = sizeof(struct usb_cdc_header_descriptor), + .bDescriptorType = CS_INTERFACE, + .bDescriptorSubtype = USB_CDC_TYPE_HEADER, + .bcdCDC = 0x0110, + }, + .call_mgmt = { + .bFunctionLength = + sizeof(struct usb_cdc_call_management_descriptor), + .bDescriptorType = CS_INTERFACE, + .bDescriptorSubtype = USB_CDC_TYPE_CALL_MANAGEMENT, + .bmCapabilities = 0, + .bDataInterface = 1, + }, + .acm = { + .bFunctionLength = sizeof(struct usb_cdc_acm_descriptor), + .bDescriptorType = CS_INTERFACE, + .bDescriptorSubtype = USB_CDC_TYPE_ACM, + .bmCapabilities = 0, + }, + .cdc_union = { + .bFunctionLength = sizeof(struct usb_cdc_union_descriptor), + .bDescriptorType = CS_INTERFACE, + .bDescriptorSubtype = USB_CDC_TYPE_UNION, + .bControlInterface = 0, + .bSubordinateInterface0 = 1, + } +}; + +static const struct usb_interface_descriptor comm_iface[] = {{ + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bInterfaceNumber = 0, + .bAlternateSetting = 0, + .bNumEndpoints = 1, + .bInterfaceClass = USB_CLASS_CDC, + .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM, + .bInterfaceProtocol = USB_CDC_PROTOCOL_AT, + .iInterface = 0, + + .endpoint = comm_endp, + + .extra = &cdcacm_functional_descriptors, + .extralen = sizeof(cdcacm_functional_descriptors) +}}; + +static const struct usb_interface_descriptor data_iface[] = {{ + .bLength = USB_DT_INTERFACE_SIZE, + .bDescriptorType = USB_DT_INTERFACE, + .bInterfaceNumber = 1, + .bAlternateSetting = 0, + .bNumEndpoints = 2, + .bInterfaceClass = USB_CLASS_DATA, + .bInterfaceSubClass = 0, + .bInterfaceProtocol = 0, + .iInterface = 0, + + .endpoint = data_endp, +}}; + +static const struct usb_interface ifaces[] = {{ + .num_altsetting = 1, + .altsetting = comm_iface, +}, { + .num_altsetting = 1, + .altsetting = data_iface, +}}; + +static const struct usb_config_descriptor config = { + .bLength = USB_DT_CONFIGURATION_SIZE, + .bDescriptorType = USB_DT_CONFIGURATION, + .wTotalLength = 0, + .bNumInterfaces = 2, + .bConfigurationValue = 1, + .iConfiguration = 0, + .bmAttributes = 0x80, + .bMaxPower = 0x32, + + .interface = ifaces, +}; + +static const char *usb_strings[] = { + "x", + "Black Sphere Technologies", + "CDC-ACM Demo", + "DEMO" +}; + +static int cdcacm_control_request(struct usb_setup_data *req, u8 **buf, + u16 *len, void (**complete)(struct usb_setup_data *req)) +{ + (void)complete; + (void)buf; + + switch(req->bRequest) { + case USB_CDC_REQ_SET_CONTROL_LINE_STATE: { + /* This Linux cdc_acm driver requires this to be implemented + * even though it's optional in the CDC spec, and we don't + * advertise it in the ACM functional descriptor. */ + char buf[10]; + struct usb_cdc_notification *notif = (void*)buf; + + /* We echo signals back to host as notification */ + notif->bmRequestType = 0xA1; + notif->bNotification = USB_CDC_NOTIFY_SERIAL_STATE; + notif->wValue = 0; + notif->wIndex = 0; + notif->wLength = 2; + buf[8] = req->wValue & 3; + buf[9] = 0; + //usbd_ep_write_packet(0x83, buf, 10); + return 1; + } + case USB_CDC_REQ_SET_LINE_CODING: + if(*len < sizeof(struct usb_cdc_line_coding)) + return 0; + + return 1; + } + return 0; +} + +static void cdcacm_data_rx_cb(u8 ep) +{ + (void)ep; + + char buf[64]; + int len = usbd_ep_read_packet(0x01, buf, 64); + if(len) { + usbd_ep_write_packet(0x82, buf, len); + buf[len] = 0; + } +} + +static void cdcacm_set_config(u16 wValue) +{ + (void)wValue; + + usbd_ep_setup(0x01, USB_ENDPOINT_ATTR_BULK, 64, cdcacm_data_rx_cb); + usbd_ep_setup(0x82, USB_ENDPOINT_ATTR_BULK, 64, NULL); + usbd_ep_setup(0x83, USB_ENDPOINT_ATTR_INTERRUPT, 16, NULL); + + usbd_register_control_callback( + USB_REQ_TYPE_CLASS | USB_REQ_TYPE_INTERFACE, + USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT, + cdcacm_control_request); +} + +int main(void) +{ + rcc_clock_setup_in_hsi_out_48mhz(); + + rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USBEN); + rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN); + + gpio_set(GPIOC, GPIO11); + gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ, + GPIO_CNF_OUTPUT_PUSHPULL, GPIO11); + + usbd_init(&dev, &config, usb_strings); + usbd_register_set_config_callback(cdcacm_set_config); + + {int i; for (i=0;i<0x80000;i++);} + gpio_clear(GPIOC, GPIO11); + + while (1) + usbd_poll(); +} diff --git a/examples/stm32/stm32-h103/usb_cdcacm/cdcacm.ld b/examples/stm32/stm32-h103/usb_cdcacm/cdcacm.ld new file mode 100644 index 0000000..a393e0b --- /dev/null +++ b/examples/stm32/stm32-h103/usb_cdcacm/cdcacm.ld @@ -0,0 +1,32 @@ +/* + * This file is part of the libopenstm32 project. + * + * Copyright (C) 2010 Thomas Otto + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +/* Linker script for Olimex STM32-H103 (STM32F103RBT6, 128K flash, 20K RAM). */ + +/* Define memory regions. */ +MEMORY +{ + rom (rx) : ORIGIN = 0x08000000, LENGTH = 128K + ram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K +} + + +/* Include the common ld script from libopenstm32. */ +INCLUDE libopenstm32.ld + -- cgit v1.2.3