Tomas Cerskus
USB device stack with Nucleo F401RE support. NOTE: the default clock config needs to be changed to in order for USB to work.
Fork of
USBDevice
by 
Tomas Cerskus
Slightly modified original USBDevice library to support F401RE.
On F401RE the data pins of your USB connector should be attached to PA12 (D+) and PA11(D-). It is also required to connect the +5V USB line to PA9.
F401RE requires 48MHz clock for USB. Therefore in order for this to work you will need to change the default clock settings:
Clock settings for USB
#include "stm32f4xx_hal.h"
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = 16;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
RCC_OscInitStruct.PLL.PLLM = 16;
RCC_OscInitStruct.PLL.PLLN = 336;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
RCC_OscInitStruct.PLL.PLLQ = 7;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
error("RTC error: LSI clock initialization failed.");
}
NOTE: Changing the clock frequency might affect the behavior of other libraries. I only tested the Serial library.
UPDATE: Clock settings should not to be changed anymore! Looks like the newer mbed library has the required clock enabled.
Revision 19:fcb63a105965, committed 2014-02-20
- Comitter:
- mbed_official
- Date:
- Thu Feb 20 11:15:58 2014 +0000
- Parent:
- 18:78bdbce94509
- Child:
- 20:d38b72fed893
- Commit message:
- Synchronized with git revision 87193889326571b560379153239787775654be59
Full URL: https://github.com/mbedmicro/mbed/commit/87193889326571b560379153239787775654be59/
libraries/USBSerial: Allow the USB connection to be non-blocking
Changed in this revision
--- a/USBSerial/USBCDC.cpp Tue Feb 18 11:00:19 2014 +0000
+++ b/USBSerial/USBCDC.cpp Thu Feb 20 11:15:58 2014 +0000
@@ -29,9 +29,9 @@
#define MAX_CDC_REPORT_SIZE MAX_PACKET_SIZE_EPBULK
-USBCDC::USBCDC(uint16_t vendor_id, uint16_t product_id, uint16_t product_release): USBDevice(vendor_id, product_id, product_release) {
+USBCDC::USBCDC(uint16_t vendor_id, uint16_t product_id, uint16_t product_release, bool connect_blocking): USBDevice(vendor_id, product_id, product_release) {
terminal_connected = false;
- USBDevice::connect();
+ USBDevice::connect(connect_blocking);
}
bool USBCDC::USBCallback_request(void) {
--- a/USBSerial/USBCDC.h Tue Feb 18 11:00:19 2014 +0000
+++ b/USBSerial/USBCDC.h Thu Feb 20 11:15:58 2014 +0000
@@ -35,8 +35,9 @@
* @param vendor_id Your vendor_id
* @param product_id Your product_id
* @param product_release Your preoduct_release
+ * @param connect_blocking define if the connection must be blocked if USB not plugged in
*/
- USBCDC(uint16_t vendor_id, uint16_t product_id, uint16_t product_release);
+ USBCDC(uint16_t vendor_id, uint16_t product_id, uint16_t product_release, bool connect_blocking);
protected:
--- a/USBSerial/USBSerial.h Tue Feb 18 11:00:19 2014 +0000
+++ b/USBSerial/USBSerial.h Thu Feb 20 11:15:58 2014 +0000
@@ -53,9 +53,10 @@
* @param vendor_id Your vendor_id (default: 0x1f00)
* @param product_id Your product_id (default: 0x2012)
* @param product_release Your preoduct_release (default: 0x0001)
+ * @param connect_blocking define if the connection must be blocked if USB not plugged in
*
*/
- USBSerial(uint16_t vendor_id = 0x1f00, uint16_t product_id = 0x2012, uint16_t product_release = 0x0001): USBCDC(vendor_id, product_id, product_release), buf(128){
+ USBSerial(uint16_t vendor_id = 0x1f00, uint16_t product_id = 0x2012, uint16_t product_release = 0x0001, bool connect_blocking = true): USBCDC(vendor_id, product_id, product_release, connect_blocking), buf(128){
settingsChangedCallback = 0;
};