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Code Issues Releases Wiki Activity

Fix USBHS initialization order

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This commit is contained in:
PaulStoffregen 2016-06-29 13:25:49 -07:00
parent d87146efcf
commit 1cab5f2dc8
1 changed files with 32 additions and 13 deletions
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45
k66_usbhost.ino
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@ -1,7 +1,7 @@
// usb host experiments....
uint32_t periodictable[64] __attribute__ ((aligned(4096)));
uint32_t periodictable[64] __attribute__ ((aligned(4096), used));
uint32_t qh[12] __attribute__ ((aligned(64)));
uint32_t qtd_setup[8] __attribute__ ((aligned(32)));
uint32_t qtd_in[8] __attribute__ ((aligned(32)));
@ -14,8 +14,8 @@ void setup()
digitalWrite(32, LOW);
while (!Serial) ; // wait
print("USB Host Testing");
//MPU_RGDAAC0 |= 0x30000000;
MPU_RGDAAC0 |= 0xF0000000;
print_mpu();
MPU_RGDAAC0 |= 0x30000000;
MCG_C1 |= MCG_C1_IRCLKEN; // enable MCGIRCLK 32kHz
OSC0_CR |= OSC_ERCLKEN;
SIM_SOPT2 |= SIM_SOPT2_USBREGEN; // turn on USB regulator
@ -67,18 +67,17 @@ void setup()
USBHS_USBCMD |= USBHS_USBCMD_RST;
count = 0;
while (USBHS_USBCMD & USBHS_USBCMD_RST) {
count;
count++;
}
print(" reset waited ", count);
for (int i=0; i < 64; i++) {
//periodictable[i] = (void *)1;
periodictable[i] = 1;
}
qh[0] = ((uint32_t)qh) | 2;
qh[1] = 0x0040E000; // addr=0, ep=0
qh[2] = 0x40000000;
qh[3] = 0;
qh[3] = (uint32_t)qtd_setup;
qh[4] = 1;
qh[5] = 0;
qh[6] = 0;
@ -87,23 +86,34 @@ void setup()
qh[9] = 0;
qh[10] = 0;
qh[11] = 0;
qtd_setup[0] = 1;
qtd_setup[1] = 1;
qtd_setup[2] = 0; // 0 = not active
qtd_setup[3] = 0;
qtd_setup[4] = 0;
qtd_setup[5] = 0;
qtd_setup[6] = 0;
qtd_setup[7] = 0;
// turn on the USBHS controller
USBHS_USBMODE = USBHS_USBMODE_TXHSD(5) | USBHS_USBMODE_CM(3); // host mode
USBHS_USBINTR = 0;
USBHS_PERIODICLISTBASE = (uint32_t)periodictable;
USBHS_FRINDEX = 0;
USBHS_ASYNCLISTADDR = (uint32_t)qh;
// turn on the USBHS controller
USBHS_USBMODE = USBHS_USBMODE_TXHSD(5) | USBHS_USBMODE_CM(3); // host mode
USBHS_USBCMD = USBHS_USBCMD_ITC(0) | USBHS_USBCMD_RS | USBHS_USBCMD_ASP(3) |
USBHS_USBCMD_FS2 | USBHS_USBCMD_FS(0) | // periodic table is 64 pointers
0;
//USBHS_USBCMD_ASE; // TODO: halts with error, but why?
//USBHS_USBCMD_PSE | USBHS_USBCMD_ASE; // TODO: halts with error, but why?
USBHS_USBCMD_PSE | USBHS_USBCMD_ASE;
USBHS_PORTSC1 |= USBHS_PORTSC_PP;
//USBHS_PORTSC1 |= USBHS_PORTSC_PFSC; // force 12 Mbit/sec
//USBHS_PORTSC1 |= USBHS_PORTSC_PHCD; // phy off
Serial.print("USBHS_ASYNCLISTADDR = ");
Serial.println(USBHS_ASYNCLISTADDR, HEX);
Serial.print("USBHS_PERIODICLISTBASE = ");
Serial.println(USBHS_PERIODICLISTBASE, HEX);
Serial.print("periodictable = ");
Serial.println((uint32_t)periodictable, HEX);
}
void port_status()
@ -165,6 +175,10 @@ void port_status()
Serial.print(USBHS_FRINDEX); // periodic index
Serial.println();
if (USBHS_USBSTS & 16) {
print_mpu();
USBHS_USBSTS = 16; // clear error
}
}
@ -205,3 +219,8 @@ void print(const char *s, int num)
delay(10);
}
void print_mpu()
{
Serial.print("MPU: CESR=");
Serial.println(MPU_CESR, HEX);
}