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teensy-usbhost
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Support for Silicon labs: CP210x 

Did a quick add of support for the Slicon Labs CP210x drivers.  Did similar like messages as FTDI, based on their documents on line:
https://www.silabs.com/documents/public/application-notes/AN571.pdf
main
Kurt Eckhardt 7 years ago
parent
12be685ab1
commit
ec4a7ac24c
2 changed files with 133 additions and 3 deletions
Split View Show Diff Stats
  1. +2
    -2
      USBHost_t36.h
  2. +131
    -1
      serial.cpp

+ 2
- 2
USBHost_t36.h View File

@@ -943,7 +943,7 @@ private:
USBDriverTimer txtimer;
uint32_t bigbuffer[(BUFFER_SIZE+3)/4];
setup_t setup;
uint8_t setupdata[8];
uint8_t setupdata[16]; //
uint32_t baudrate;
uint32_t format_;
Pipe_t *rxpipe;
@@ -968,7 +968,7 @@ private:
uint8_t pl2303_v2;
uint8_t interface;
bool control_queued;
typedef enum { UNKNOWN=0, CDCACM, FTDI, PL2303, CH341 } sertype_t;
typedef enum { UNKNOWN=0, CDCACM, FTDI, PL2303, CH341, CP210X } sertype_t;
sertype_t sertype;

typedef struct {

+ 131
- 1
serial.cpp View File

@@ -42,7 +42,10 @@ USBSerial::product_vendor_mapping_t USBSerial::pid_vid_mapping[] = {
// CH341
{0x4348, 0x5523, USBSerial::CH341 },
{0x1a86, 0x7523, USBSerial::CH341 },
{0x1a86, 0x5523, USBSerial::CH341 }
{0x1a86, 0x5523, USBSerial::CH341 },

// Silex CP210...
{0x10c4, 0xea60, USBSerial::CP210X }
};


@@ -307,6 +310,7 @@ bool USBSerial::claim(Device_t *dev, int type, const uint8_t *descriptors, uint3
txpipe->callback_function = tx_callback;
baudrate = 115200;

// First attempt keep it simple...
println("PL2303: readRegister(0x04)");
// Need to setup the data the line coding data
mk_setup(setup, 0xC0, 0x1, 0x8484, 0, 1);
@@ -381,6 +385,71 @@ bool USBSerial::claim(Device_t *dev, int type, const uint8_t *descriptors, uint3
return true;
}
//------------------------------------------------------------------------
// CP210X
case CP210X:
{
println("len = ", len);
uint8_t count_end_points = descriptors[4];
if (count_end_points < 2) return false; // not enough end points
if (len < 23) return false;
if (descriptors[0] != 9) return false; // length 9

// Lets walk through end points and see if we
// can find an RX and TX bulk transfer end point.
// BUGBUG: should factor out this code as duplicated...
// vid=10C4, pid=EA60, bDeviceClass = 0, bDeviceSubClass = 0, bDeviceProtocol = 0
// 0 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 20 1 2 3 4 5 6 7 8 9
//09 04 00 00 02 FF 00 00 02 07 05 81 02 40 00 00 07 05 01 02 40 00 00
uint32_t rxep = 0;
uint32_t txep = 0;
uint32_t descriptor_index = 9;
while (count_end_points-- && ((rxep == 0) || txep == 0)) {
if (descriptors[descriptor_index] != 7) return false; // length 7
if (descriptors[descriptor_index+1] != 5) return false; // ep desc
if ((descriptors[descriptor_index+3] == 2)
&& (descriptors[descriptor_index+4] <= 64)
&& (descriptors[descriptor_index+5] == 0)) {
// have a bulk EP size
if (descriptors[descriptor_index+2] & 0x80 ) {
rxep = descriptors[descriptor_index+2];
rxsize = descriptors[descriptor_index+4];
} else {
txep = descriptors[descriptor_index+2];
txsize = descriptors[descriptor_index+4];
}
}
descriptor_index += 7; // setup to look at next one...
}
// Try to verify the end points.
if (!check_rxtx_ep(rxep, txep)) return false;
print("CP210X, rxep=", rxep & 15);
println(", txep=", txep);
if (!init_buffers(rxsize, txsize)) return false;
rxpipe = new_Pipe(dev, 2, rxep & 15, 1, rxsize);
if (!rxpipe) return false;
txpipe = new_Pipe(dev, 2, txep, 0, txsize);
if (!txpipe) {
// TODO: free rxpipe
return false;
}

rxpipe->callback_function = rx_callback;
queue_Data_Transfer(rxpipe, rx1, rxsize, this);
rxstate = 1;
txstate = 0;
txpipe->callback_function = tx_callback;
baudrate = 115200;

println("CP210X: 0x41, 0x11, 0, 0, 0 - reset port");
// Need to setup the data the line coding data
mk_setup(setup, 0x41, 0x11, 0, 0, 0);
queue_Control_Transfer(dev, &setup, NULL, this);
control_queued = true;
setup_state = 1; // We are at step one of setup...
pending_control = 0xf;
return true;
}
//------------------------------------------------------------------------
// PID:VID - not in our product list.
default:
return false;
@@ -917,6 +986,66 @@ void USBSerial::control(const Transfer_t *transfer)
return;
}
}
//-------------------------------------------------------------------------
// First CP210X
if (sertype == CP210X) {
if (pending_control & 1) {
pending_control &= ~1;
// set data format
uint16_t cp210x_format = (format_ & 0xf) << 8; // This should give us the number of bits.

// now lets extract the parity from our encoding bits 5-7 and in theres 4-7
cp210x_format |= (format_ & 0xe0) >> 1; // they encode bits 9-11

// See if two stop bits
if (format_ & 0x100) cp210x_format |= 2;

mk_setup(setup, 0x41, 3, cp210x_format, 0, 0); // data format 8N1
queue_Control_Transfer(device, &setup, NULL, this);
control_queued = true;
return;
}
// set baud rate
if (pending_control & 2) {
pending_control &= ~2;
setupdata[0] = (baudrate) & 0xff; // Setup baud rate 115200 - 0x1C200
setupdata[1] = (baudrate >> 8) & 0xff;
setupdata[2] = (baudrate >> 16) & 0xff;
setupdata[3] = (baudrate >> 24) & 0xff;
mk_setup(setup, 0x40, 0x1e, 0, 0, 4);
queue_Control_Transfer(device, &setup, setupdata, this);
control_queued = true;
return;
}
// configure flow control
if (pending_control & 4) {
pending_control &= ~4;
memset(setupdata, 0, sizeof(setupdata)); // clear out the data
setupdata[0] = 1; // Set dtr active?
mk_setup(setup, 0x41, 13, 0, 0, 0x10);
queue_Control_Transfer(device, &setup, setupdata, this);
control_queued = true;
return;
}
// set DTR
if (pending_control & 8) {
pending_control &= ~8;
mk_setup(setup, 0x41, 7, 0x0101, 0, 0);
queue_Control_Transfer(device, &setup, NULL, this);
control_queued = true;
return;
}
// clear DTR
if (pending_control & 0x80) {
pending_control &= ~0x80;
println("CP210x clear DTR");
mk_setup(setup, 0x40, 1, 0x0100, 0, 0);
queue_Control_Transfer(device, &setup, NULL, this);
control_queued = true;
return;
}

}
}

#define CH341_BAUDBASE_FACTOR 1532620800
@@ -1170,6 +1299,7 @@ void USBSerial::begin(uint32_t baud, uint32_t format)
case FTDI: pending_control |= (format_changed? 0xf : 0xe); break; // Set BAUD, FLOW, DTR
case PL2303: pending_control |= 0x1e; break; // set more stuff...
case CH341: pending_control |= 0x1e; break;
case CP210X: pending_control |= 0xf; break;
}
if (!control_queued) control(NULL);
NVIC_ENABLE_IRQ(IRQ_USBHS);

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