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stm32: Initial support for stm32f070

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Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2019-09-16 11:45:36 -04:00
parent 7e090a996a
commit 2c535106ee
9 changed files with 390 additions and 21 deletions
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23
src/stm32/usbfs.c
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@ -235,7 +235,7 @@ usb_reset(void)
// Main irq handler
void
USB_LP_CAN1_RX0_IRQHandler(void)
USB_IRQHandler(void)
{
uint32_t istr = USB->ISTR;
if (istr & USB_ISTR_CTR) {
@ -269,10 +269,12 @@ DECL_CONSTANT_STR("RESERVE_PINS_USB", "PA11,PA12");
void
usb_init(void)
{
// Pull the D+ pin low briefly to signal a new connection
gpio_out_setup(GPIO('A', 12), 0);
udelay(5000);
gpio_in_setup(GPIO('A', 12), 0);
if (CONFIG_MACH_STM32F1) {
// Pull the D+ pin low briefly to signal a new connection
gpio_out_setup(GPIO('A', 12), 0);
udelay(5000);
gpio_in_setup(GPIO('A', 12), 0);
}
// Enable USB clock
enable_pclock(USB_BASE);
@ -280,12 +282,21 @@ usb_init(void)
// Setup USB packet memory
btable_configure();
// Enable USB pullup
#ifdef USB_BCDR_DPPU
USB->BCDR = USB_BCDR_DPPU;
#endif
// Reset usb controller and enable interrupts
USB->CNTR = USB_CNTR_FRES;
USB->BTABLE = 0;
USB->DADDR = 0;
USB->CNTR = USB_CNTR_RESETM;
USB->ISTR = 0;
armcm_enable_irq(USB_LP_CAN1_RX0_IRQHandler, USB_LP_CAN1_RX0_IRQn, 1);
#if CONFIG_MACH_STM32F103
armcm_enable_irq(USB_IRQHandler, USB_LP_IRQn, 1);
#elif CONFIG_MACH_STM32F0
armcm_enable_irq(USB_IRQHandler, USB_IRQn, 1);
#endif
}
DECL_INIT(usb_init);