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Fix USBHS PHY PLL init

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This commit is contained in:
PaulStoffregen 2016-06-29 06:37:43 -07:00
parent 453d04d42d
commit d87146efcf
1 changed files with 28 additions and 9 deletions
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37
k66_usbhost.ino
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@ -1,8 +1,11 @@
// usb host experiments....
//void * periodictable[64] __attribute__ ((section(".dmabuffers"), used, aligned(4096)))
uint32_t periodictable[64] __attribute__ ((aligned(4096)));
uint32_t qh[12] __attribute__ ((aligned(64)));
uint32_t qtd_setup[8] __attribute__ ((aligned(32)));
uint32_t qtd_in[8] __attribute__ ((aligned(32)));
uint32_t qtd_outack[8] __attribute__ ((aligned(32)));
void setup()
@ -11,7 +14,8 @@ void setup()
digitalWrite(32, LOW);
while (!Serial) ; // wait
print("USB Host Testing");
MPU_RGDAAC0 |= 0x30000000;
//MPU_RGDAAC0 |= 0x30000000;
MPU_RGDAAC0 |= 0xF0000000;
MCG_C1 |= MCG_C1_IRCLKEN; // enable MCGIRCLK 32kHz
OSC0_CR |= OSC_ERCLKEN;
SIM_SOPT2 |= SIM_SOPT2_USBREGEN; // turn on USB regulator
@ -23,17 +27,17 @@ void setup()
USBHSDCD_CLOCK = 33 << 2;
print("init USBHS PHY & PLL");
// init process: page 1681-1682
USBPHY_CTRL &= ~USBPHY_CTRL_SFTRST; // CTRL pg 1698
USBPHY_CTRL &= ~USBPHY_CTRL_CLKGATE;
USBPHY_PLL_SIC |= USBPHY_PLL_SIC_PLL_POWER;
USBPHY_PLL_SIC |= USBPHY_PLL_SIC_PLL_DIV_SEL(1); // PLL_SIC pg 1708
USBPHY_CTRL_CLR = (USBPHY_CTRL_SFTRST | USBPHY_CTRL_CLKGATE); // // CTRL pg 1698
USBPHY_TRIM_OVERRIDE_EN_SET = 1;
USBPHY_PLL_SIC = USBPHY_PLL_SIC_PLL_POWER | USBPHY_PLL_SIC_PLL_ENABLE |
USBPHY_PLL_SIC_PLL_DIV_SEL(1) | USBPHY_PLL_SIC_PLL_EN_USB_CLKS;
// wait for the PLL to lock
int count=0;
while ((USBPHY_PLL_SIC & USBPHY_PLL_SIC_PLL_LOCK) == 0) {
count++;
}
print("PLL locked, waited ", count);
USBPHY_PLL_SIC |= USBPHY_PLL_SIC_PLL_EN_USB_CLKS;
// turn on power to PHY
USBPHY_PWD = 0;
delay(10);
@ -71,16 +75,31 @@ void setup()
//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[4] = 1;
qh[5] = 0;
qh[6] = 0;
qh[7] = 0;
qh[8] = 0;
qh[9] = 0;
qh[10] = 0;
qh[11] = 0;
USBHS_USBINTR = 0;
USBHS_PERIODICLISTBASE = (uint32_t)periodictable;
USBHS_FRINDEX = 0;
USBHS_ASYNCLISTADDR = 0; // TODO: data..
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
USBHS_USBCMD_PSE;
0;
//USBHS_USBCMD_ASE; // TODO: halts with error, but why?
//USBHS_USBCMD_PSE | USBHS_USBCMD_ASE; // TODO: halts with error, but why?
USBHS_PORTSC1 |= USBHS_PORTSC_PP;
//USBHS_PORTSC1 |= USBHS_PORTSC_PFSC; // force 12 Mbit/sec