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stm32: Use official defines for EPR bits 

Use the standard definitions for the endpoint register bits.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2019-09-16 15:42:47 -04:00
parent 86cf361486
commit 045c938a61
1 changed files with 23 additions and 30 deletions
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53
src/stm32/usbfs.c
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@ -94,34 +94,25 @@ btable_write_packet(uint32_t *dest, const uint8_t *src, int count)
#define USB_EPR ((volatile uint32_t *)USB_BASE)
#define EP_BULK (0 << USB_EP0R_EP_TYPE_Pos)
#define EP_CONTROL (1 << USB_EP0R_EP_TYPE_Pos)
#define EP_INTERRUPT (3 << USB_EP0R_EP_TYPE_Pos)
#define RX_STALL (1 << USB_EP0R_STAT_RX_Pos)
#define RX_NAK (2 << USB_EP0R_STAT_RX_Pos)
#define RX_VALID (3 << USB_EP0R_STAT_RX_Pos)
#define TX_STALL (1 << USB_EP0R_STAT_TX_Pos)
#define TX_NAK (2 << USB_EP0R_STAT_TX_Pos)
#define TX_VALID (3 << USB_EP0R_STAT_TX_Pos)
#define EPR_RWBITS (USB_EP0R_EA | USB_EP0R_EP_KIND | USB_EP0R_EP_TYPE)
#define EPR_RWCBITS (USB_EP0R_CTR_RX | USB_EP0R_CTR_TX)
#define EPR_RWBITS (USB_EPADDR_FIELD | USB_EP_KIND | USB_EP_TYPE_MASK)
#define EPR_RWCBITS (USB_EP_CTR_RX | USB_EP_CTR_TX)
static uint32_t
set_stat_rx_bits(uint32_t epr, uint32_t bits)
{
return ((epr & (EPR_RWBITS | USB_EP0R_STAT_RX_Msk)) ^ bits) | EPR_RWCBITS;
return ((epr & (EPR_RWBITS | USB_EPRX_STAT)) ^ bits) | EPR_RWCBITS;
}
static uint32_t
set_stat_tx_bits(uint32_t epr, uint32_t bits)
{
return ((epr & (EPR_RWBITS | USB_EP0R_STAT_TX_Msk)) ^ bits) | EPR_RWCBITS;
return ((epr & (EPR_RWBITS | USB_EPTX_STAT)) ^ bits) | EPR_RWCBITS;
}
static uint32_t
set_stat_rxtx_bits(uint32_t epr, uint32_t bits)
{
uint32_t mask = EPR_RWBITS | USB_EP0R_STAT_RX_Msk | USB_EP0R_STAT_TX_Msk;
uint32_t mask = EPR_RWBITS | USB_EPRX_STAT | USB_EPTX_STAT;
return ((epr & mask) ^ bits) | EPR_RWCBITS;
}
@ -134,14 +125,14 @@ int_fast8_t
usb_read_bulk_out(void *data, uint_fast8_t max_len)
{
uint32_t epr = USB_EPR[USB_CDC_EP_BULK_OUT];
if ((epr & USB_EP0R_STAT_RX_Msk) == RX_VALID)
if ((epr & USB_EPRX_STAT) == USB_EP_RX_VALID)
// No data ready
return -1;
uint32_t count = EPM->ep_bulk_out.count_rx & 0x3ff;
if (count > max_len)
count = max_len;
btable_read_packet(data, EPM->ep_bulk_out_rx, count);
USB_EPR[USB_CDC_EP_BULK_OUT] = set_stat_rx_bits(epr, RX_VALID);
USB_EPR[USB_CDC_EP_BULK_OUT] = set_stat_rx_bits(epr, USB_EP_RX_VALID);
return count;
}
@ -149,12 +140,12 @@ int_fast8_t
usb_send_bulk_in(void *data, uint_fast8_t len)
{
uint32_t epr = USB_EPR[USB_CDC_EP_BULK_IN];
if ((epr & USB_EP0R_STAT_TX_Msk) != TX_NAK)
if ((epr & USB_EPTX_STAT) != USB_EP_TX_NAK)
// No buffer space available
return -1;
btable_write_packet(EPM->ep_bulk_in_tx, data, len);
EPM->ep_bulk_in.count_tx = len;
USB_EPR[USB_CDC_EP_BULK_IN] = set_stat_tx_bits(epr, TX_VALID);
USB_EPR[USB_CDC_EP_BULK_IN] = set_stat_tx_bits(epr, USB_EP_TX_VALID);
return len;
}
@ -162,14 +153,14 @@ int_fast8_t
usb_read_ep0(void *data, uint_fast8_t max_len)
{
uint32_t epr = USB_EPR[0];
if ((epr & USB_EP0R_STAT_RX_Msk) != RX_NAK)
if ((epr & USB_EPRX_STAT) != USB_EP_RX_NAK)
// No data ready
return -1;
uint32_t count = EPM->ep0.count_rx & 0x3ff;
if (count > max_len)
count = max_len;
btable_read_packet(data, EPM->ep0_rx, count);
USB_EPR[0] = set_stat_rxtx_bits(epr, RX_VALID | TX_NAK);
USB_EPR[0] = set_stat_rxtx_bits(epr, USB_EP_RX_VALID | USB_EP_TX_NAK);
return count;
}
@ -183,22 +174,23 @@ int_fast8_t
usb_send_ep0(const void *data, uint_fast8_t len)
{
uint32_t epr = USB_EPR[0];
if ((epr & USB_EP0R_STAT_RX_Msk) != RX_VALID)
if ((epr & USB_EPRX_STAT) != USB_EP_RX_VALID)
// Transfer interrupted
return -2;
if ((epr & USB_EP0R_STAT_TX_Msk) != TX_NAK)
if ((epr & USB_EPTX_STAT) != USB_EP_TX_NAK)
// No buffer space available
return -1;
btable_write_packet(EPM->ep0_tx, data, len);
EPM->ep0.count_tx = len;
USB_EPR[0] = set_stat_tx_bits(epr, TX_VALID);
USB_EPR[0] = set_stat_tx_bits(epr, USB_EP_TX_VALID);
return len;
}
void
usb_stall_ep0(void)
{
USB_EPR[0] = set_stat_rxtx_bits(USB_EPR[0], RX_STALL | TX_STALL);
USB_EPR[0] = set_stat_rxtx_bits(USB_EPR[0]
, USB_EP_RX_STALL | USB_EP_TX_STALL);
}
static uint8_t set_address;
@ -238,12 +230,13 @@ usb_request_bootloader(void)
static void
usb_reset(void)
{
USB_EPR[0] = 0 | EP_CONTROL | RX_VALID | TX_NAK;
USB_EPR[USB_CDC_EP_ACM] = USB_CDC_EP_ACM | EP_INTERRUPT | RX_NAK | TX_NAK;
USB_EPR[USB_CDC_EP_BULK_OUT] = (USB_CDC_EP_BULK_OUT | EP_BULK
| RX_VALID | TX_NAK);
USB_EPR[USB_CDC_EP_BULK_IN] = (USB_CDC_EP_BULK_IN | EP_BULK
| RX_NAK | TX_NAK);
USB_EPR[0] = 0 | USB_EP_CONTROL | USB_EP_RX_VALID | USB_EP_TX_NAK;
USB_EPR[USB_CDC_EP_ACM] = (USB_CDC_EP_ACM | USB_EP_INTERRUPT
| USB_EP_RX_NAK | USB_EP_TX_NAK);
USB_EPR[USB_CDC_EP_BULK_OUT] = (USB_CDC_EP_BULK_OUT | USB_EP_BULK
| USB_EP_RX_VALID | USB_EP_TX_NAK);
USB_EPR[USB_CDC_EP_BULK_IN] = (USB_CDC_EP_BULK_IN | USB_EP_BULK
| USB_EP_RX_NAK | USB_EP_TX_NAK);
USB->CNTR = USB_CNTR_CTRM | USB_CNTR_RESETM;
USB->DADDR = USB_DADDR_EF;