Need host cdc example

[satar1980]

can you make usb host cdc example....

[minilogic]

Which CDC-device exactly do you mean? I have Holtek HT42B534 usb-uart bridge.

[satar1980]

i want communicate to stm32f1. i config stm32 as cdc devive. and on the f1c100s i can receive data with this function :

static void mydev_rcv (void) // this fucntion i borrow from void net_rcv (void) : usbh_net.c
{
struct pbuf* p;
int len = USB->RXCOUNT;
while(len)
{
len--;
LCD_printf("%c",USB->FIFO[1].byte);
}
}

but i cannot send data to stm32f1 with :

USB->EP_IDX = 1;
USB->FIFO[1].word32 = 1 | TX_FS | TX_LS;
USB->FIFO[1].word32 = 0;

    USB->EP_IDX = 1;
    USB->FIFO[0].byte = '0';
    USB->TXCSR = 1;
    wait_csr(1, 1, 0, 5000000);

that code i borrow from err_t net_snd (struct netif *netif, struct pbuf *p) : usbh_net.c
can u help me to fix it

=======================================================================================
this is the full code :

#include <stdio.h>
#include "usbh_msc.h"
#include "usbh_net.h"
#include "lcd.h"

uint32_t dev_tim, dev_con = 0;

#define BIT(nr) (1UL << (nr))
#define TX_FS BIT(31) /* First segment of a packet /
#define TX_LS BIT(30) / Final segment of a packet */

#if 0
#define PUTC(ch) putchar(ch)
#define PUTS(str) puts(str)
#define PUTF(...) printf(VA_ARGS)
#else
#define PUTC(ch)
#define PUTS(str)
#define PUTF(...)
#endif

u8 dev_usb;

/*******************************************************************************
USB PHY
*******************************************************************************/

void usbh_init (void)
{
usb_mux(USB_MUX_HOST);
CCU->USBPHY_CFG |= 3;
CCU->BUS_CLK_GATING0 |= (1 << 24);
CCU->BUS_SOFT_RST0 &= ~(1 << 24);
CCU->BUS_SOFT_RST0 |= (1 << 24);
#if 1
phy_write(0x0c, 0x01, 1);
phy_write(0x20, 0x14, 5);
//phy_write(0x2A, 0x02, 2);
phy_write(0x2A, 0x03, 2);
#endif
SYS->CTRL[1] |= 1;
USB->ISCR = (USB->ISCR & ~0x70) | (1 << 16); // USBC_BP_ISCR_DPDM_PULLUP_EN
USB->ISCR = (USB->ISCR & ~0x70) | (1 << 17);
USB->ISCR = (USB->ISCR & ~0xC070) | (2 << 14); // Force internal ID to low
USB->ISCR = (USB->ISCR & ~0x70) | (3 << 12); // Force internal VBUS to high
USB->BUS_IE = 0;
USB->BUS_IS = 0xFF;
USB->EP_IE = 0;
USB->EP_IS = 0xFFFFFFFF;
USB->DEVCTL = 0;
USB->EP_IDX = 0;
USB->VEND0 = 0;
USB->POWER = 0xA0;
USB->DEVCTL = 0x81;
USB->POWER = 0xF0;
USB->DEVCTL = 0x99;
dev.cfg = 0;
dev_usb = 0;
}

void usb_reset (void)
{
USB->POWER = 0xE8;
delay_ms(25);
phy_write(0x3c, 2, 2);
USB->POWER = 0xF0;
phy_write(0x3c, 0, 2);
delay_ms(25);
USB->EP_IDX = 0;
USB->TXCSR = 0;
USB->TXFUNCADDR = 0;
USB->TXHUBADDR = 0;
USB->TXHUBPORT = 0;
USB->TXINTERVAL = 0;
}

int usbh_myevice_init (DSC_DEV *dev_dsc)
{

if(dev_dsc->idVendor != 0x0483 || dev_dsc->idProduct != 0x5740) return KO;
set_cfg(1);

USB->EP_IDX = 1;
USB->RXFUNCADDR = 1; // address @ bus
USB->RXTYPE = (1 << 6) | (2 << 4) | 1;
USB->RXMAXP = 512; //dsc.ep1.wMaxPacketSize;
USB->RXFIFOADDR = 64 / 8; // addr * 8
USB->RXFIFOSZ = 6; // 2 ^ (size + 3)
USB->RXCSR = 0x0080; // clr data toggle
USB->TXFUNCADDR = 1; // address @ bus
USB->TXTYPE = (1 << 6) | (2 << 4) | 2; // !!! setup speed
USB->TXMAXP = 512; //dsc.ep1.wMaxPacketSize;
USB->TXFIFOADDR = (512 + 64) / 8;
USB->TXFIFOSZ = 6;
USB->TXCSR = 0x0048;
USB->EP_IDX = 0;
dev_tim = timer0_get_ticks() + 100;
return OK;
}

static void mydev_rcv (void)
{
struct pbuf* p;
int len = USB->RXCOUNT;
while(len)
{
len--;
LCD_printf("%c",USB->FIFO[1].byte);
}
}

static void ep0_send_buf (void *buf, u16 len)
{
u16 ctr;
u8 *ptr = buf;
USB->TXCSR = 0x40; // Serviced RxPktRdy
while(len)
{
while(USB->TXCSR & 2);
ctr = len < 64 ? len : 64;
len -= ctr;
do USB->FIFO[3].byte = *ptr++;
while(--ctr);
USB->TXCSR = 2; // TxPktRdy
}
USB->TXCSR = 8; // DataEnd
}

void usbh_mydev_handler (u32 isr)
{
// if(isr 1=& 0x20000)
// {
//LCD_printf("_");
USB->EP_IDX = 1;
mydev_rcv();
USB->RXCSR = 32;
// }

LCD_printf(".");

USB->EP_IDX = 1;
USB->FIFO[1].word32 = 1 | TX_FS | TX_LS;
USB->FIFO[1].word32 = 0;

    USB->EP_IDX = 1;
    USB->FIFO[0].byte = '0';
    USB->TXCSR = 1;
    wait_csr(1, 1, 0, 5000000);
      delay_ms(200);

}

[minilogic]

I apologize for my long response. If the stm32 device has a full speed USB interface, then the RXTYPE and TXTYPE registers are incorrectly initialized in the usbh_myevice_init function. They must contain (2 << 6), which determine the speed of the interface. Look at the description of this registers in the file: musb

[satar1980]

iam use this setup but still fail to send data :

int usbh_myevice_init (DSC_DEV *dev_dsc)
{
// if(dev_dsc->idVendor != 0x0483 || dev_dsc->idProduct != 0x5750) return KO;

if(dev_dsc->idVendor != 0x0483 || dev_dsc->idProduct != 0x5740) return KO;
set_cfg(1);

USB->EP_IDX = 1;
USB->RXFUNCADDR = 1; // address @ bus
USB->RXTYPE = (2 << 6) | (2 << 4) | 1;
USB->RXMAXP = 64; //dsc.ep1.wMaxPacketSize;
USB->RXFIFOADDR = 64 / 8; // addr * 8
USB->RXFIFOSZ = 6; // 2 ^ (size + 3)
USB->RXCSR = 0x0080; // clr data toggle
USB->TXFUNCADDR = 1; // address @ bus
USB->TXTYPE = (2 << 6) | (2 << 4) | 2; // !!! setup speed
USB->TXMAXP = 64; //dsc.ep1.wMaxPacketSize;
USB->TXFIFOADDR = (64 + 64) / 8;
USB->TXFIFOSZ = 6;
USB->TXCSR = 0x0048;
USB->EP_IDX = 0;
dev_tim = timer0_get_ticks() + 100;
return OK;
}

static void mydev_rcv (void)
{
int len = USB->RXCOUNT;
LCD_printf("<");
for(int i=0;i<len;i++)
{
// print char
LCD_printf("%c",USB->FIFO[1].byte);
}
LCD_printf(":%d",len);
LCD_printf(">");
}

void send_char (char data) //fail send data
{
USB->EP_IDX = 1;
USB->FIFO[1].byte = data;
USB->TXCSR = 1;
wait_csr(1, 1, 0, 5000000);
}

void usbh_mydev_handler (u32 isr)
{
USB->EP_IDX = 1;
mydev_rcv();
USB->RXCSR = 32;
send_char('a');
}

[minilogic]

You have incorrect values ​​for the USB->RXFIFOSZ and USB->TXFIFOSZ registers: 2^(6+3) = 2^9 = 512.
You need to do: USB->RXFIFOSZ = 3 and USB->TXFIFOSZ = 3. Accordingly: 2^(3+3) = 2^6 = 64.

[satar1980]

You have incorrect values ​​for the USB->RXFIFOSZ and USB->TXFIFOSZ registers: 2^(6+3) = 2^9 = 512. You need to do: USB->RXFIFOSZ = 3 and USB->TXFIFOSZ = 3. Accordingly: 2^(3+3) = 2^6 = 64.

I have tried it but still fails.

Is the function below correct ?
void send_char (char data)
{
USB->EP_IDX = 1;
USB->FIFO[1].byte = data;
USB->TXCSR = 1;
wait_csr(1, 1, 0, 5000000);
}