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get bare example working with hid device

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hathach 2022-03-19 14:57:43 +07:00
parent 4795cca04a
commit a4b976f095
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GPG Key ID: 2FA891220FBFD581
1 changed files with 83 additions and 3 deletions
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86
examples/host/bare_api/src/main.c
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@ -49,6 +49,11 @@ void parse_config_descriptor(uint8_t dev_addr, tusb_desc_configuration_t const*
tusb_desc_device_t desc_device;
#define BUF_COUNT 4
uint8_t buf_pool[BUF_COUNT][64];
uint8_t buf_owner[BUF_COUNT] = { 0 }; // device address that owns buffer
/*------------- MAIN -------------*/
int main(void)
{
@ -139,7 +144,7 @@ void print_device_descriptor(tuh_xfer_t* xfer)
printf(" bNumConfigurations %u\r\n" , desc_device.bNumConfigurations);
// Get configuration descriptor with sync API
if (XFER_RESULT_SUCCESS == tuh_descriptor_get_configuration_sync(daddr, 0, temp_buf, sizeof(temp_buf)) )
if (XFER_RESULT_SUCCESS == tuh_descriptor_get_configuration_sync(daddr, 0, temp_buf, sizeof(temp_buf)))
{
parse_config_descriptor(daddr, (tusb_desc_configuration_t*) temp_buf);
}
@ -150,10 +155,60 @@ void print_device_descriptor(tuh_xfer_t* xfer)
// Configuration Descriptor
//--------------------------------------------------------------------+
// get an buffer from pool
uint8_t* get_hid_buf(uint8_t daddr)
{
for(size_t i=0; i<BUF_COUNT; i++)
{
if (buf_owner[i] == 0)
{
buf_owner[i] = daddr;
return buf_pool[i];
}
}
// out of memory, increase BUF_COUNT
return NULL;
}
// free all buffer owned by device
void free_hid_buf(uint8_t daddr)
{
for(size_t i=0; i<BUF_COUNT; i++)
{
if (buf_owner[i] == daddr) buf_owner[i] = 0;
}
}
void hid_report_received(tuh_xfer_t* xfer)
{
// Note: not all field in xfer is available for use (i.e filled by tinyusb stack) in callback to save sram
// For instance, xfer->buffer is NULL. We have used user_data to store buffer when submitted callback
uint8_t* buf = (uint8_t*) xfer->user_data;
if (xfer->result == XFER_RESULT_SUCCESS)
{
printf("[dev %u: ep %02x] HID Report:", xfer->daddr, xfer->ep_addr);
for(uint32_t i=0; i<xfer->actual_len; i++)
{
if (i%16 == 0) printf("\r\n ");
printf("%02X ", buf[i]);
}
printf("\r\n");
}
// continue to submit transfer, with updated buffer
// other field remain the same
xfer->buflen = 64;
xfer->buffer = buf;
tuh_edpt_xfer(xfer);
}
// count total length of an interface
uint16_t count_interface_total_len(tusb_desc_interface_t const* desc_itf, uint8_t itf_count, uint16_t max_len);
void open_hid_interface(uint8_t dev_addr, tusb_desc_interface_t const *desc_itf, uint16_t max_len)
void open_hid_interface(uint8_t daddr, tusb_desc_interface_t const *desc_itf, uint16_t max_len)
{
// len = interface + hid + n*endpoints
uint16_t const drv_len = sizeof(tusb_desc_interface_t) + sizeof(tusb_hid_descriptor_hid_t) + desc_itf->bNumEndpoints*sizeof(tusb_desc_endpoint_t);
@ -165,8 +220,11 @@ void open_hid_interface(uint8_t dev_addr, tusb_desc_interface_t const *desc_itf,
// HID descriptor
p_desc = tu_desc_next(p_desc);
tusb_hid_descriptor_hid_t const *desc_hid = (tusb_hid_descriptor_hid_t const *) p_desc;
if(HID_DESC_TYPE_HID != desc_hid->bDescriptorType) return;
// Endpoint descriptor
p_desc = tu_desc_next(p_desc);
tusb_desc_endpoint_t const * desc_ep = (tusb_desc_endpoint_t const *) p_desc;
for(int i = 0; i < desc_itf->bNumEndpoints; i++)
@ -175,8 +233,30 @@ void open_hid_interface(uint8_t dev_addr, tusb_desc_interface_t const *desc_itf,
if(tu_edpt_dir(desc_ep->bEndpointAddress) == TUSB_DIR_IN)
{
//usbh_edpt_open(rhport, dev_addr, desc_ep);
// skip if failed to open endpoint
if ( ! usbh_edpt_open(daddr, desc_ep) ) return;
uint8_t* buf = get_hid_buf(daddr);
if (!buf) return; // out of memory
tuh_xfer_t xfer =
{
.daddr = daddr,
.ep_addr = desc_ep->bEndpointAddress,
.buflen = 64,
.buffer = buf,
.complete_cb = hid_report_received,
.user_data = (uintptr_t) buf, // since buffer is not available in callback, use user data to store the buffer
};
// submit transfer for this EP
tuh_edpt_xfer(&xfer);
printf("Listen to [dev %u: ep %02x]\r\n", daddr, desc_ep->bEndpointAddress);
}
p_desc = tu_desc_next(p_desc);
desc_ep = (tusb_desc_endpoint_t const *) p_desc;
}
}