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Update 035 work, getting close to USB
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,10 @@ | ||
| all : flash | ||
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| TARGET:=sandbox | ||
| TARGET_MCU:=CH32X035 | ||
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| include ../../ch32v003fun/ch32v003fun.mk | ||
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| flash : cv_flash | ||
| clean : cv_clean | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,9 @@ | ||
| #ifndef _FUNCONFIG_H | ||
| #define _FUNCONFIG_H | ||
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| // Though this should be on by default we can extra force it on. | ||
| #define FUNCONF_USE_DEBUGPRINTF 1 | ||
| #define FUNCONF_DEBUGPRINTF_TIMEOUT (1<<31) // Wait for a very very long time. | ||
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| #endif | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,43 @@ | ||
| /* Small example showing how to use the SWIO programming pin to | ||
| do printf through the debug interface */ | ||
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| #include "ch32v003fun.h" | ||
| #include <stdio.h> | ||
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| uint32_t count; | ||
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| int last = 0; | ||
| void handle_debug_input( int numbytes, uint8_t * data ) | ||
| { | ||
| last = data[0]; | ||
| count += numbytes; | ||
| } | ||
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| int main() | ||
| { | ||
| SystemInit(); | ||
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| funGpioInitAll(); | ||
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| funPinMode( PA0, GPIO_CFGLR_OUT_10Mhz_PP ); | ||
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| printf( "%08x\n", &USBPD->DMA ); | ||
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| while(1); | ||
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| #if 0 | ||
| while(1) | ||
| { | ||
| GPIOA->BSHR = 1; // Turn on GPIOs | ||
| printf( "+%lu %lu\n", count++ ); | ||
| Delay_Ms(100); | ||
| int i; | ||
| for( i = 0; i < 10000; i++ ) | ||
| poll_input(); | ||
| GPIOA->BSHR = (1<<16); // Turn off GPIODs | ||
| printf( "-%lu[%c]\n", count++, last ); | ||
| Delay_Ms(100); | ||
| } | ||
| #endif | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,11 @@ | ||
| all : flash | ||
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| TARGET:=usbdevice | ||
| TARGET_MCU:=CH32X035 | ||
| ADDITIONAL_C_FILES:=fsusb.c | ||
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| include ../../ch32v003fun/ch32v003fun.mk | ||
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| flash : cv_flash | ||
| clean : cv_clean | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,127 @@ | ||
| #include "fsusb.h" | ||
| #include "ch32v003fun.h" | ||
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| uint32_t USBDEBUG0, USBDEBUG1, USBDEBUG2; | ||
| uint8_t EP0_DATA[64] __attribute__((aligned(32))); | ||
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| void USBFS_IRQHandler() __attribute__((section(".text.vector_handler"))) __attribute__((interrupt)); | ||
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| #define CRB_U_IS_NAK (1<<7) | ||
| #define CTOG_MATCH_SYNC (1<<6) | ||
| #define CRB_U_SIE_FREE (1<<5) | ||
| #define CRB_UIF_FIFO_OV (1<<4) | ||
| #define CRB_UIF_HST_SOF (1<<3) | ||
| #define CRB_UIF_SUSPEND (1<<2) | ||
| #define CRB_UIF_TRANSFER (1<<1) | ||
| #define CRB_UIF_BUS_RST (1<<0) | ||
| #define CSETUP_ACT (1<<15) | ||
| #define CRB_UIS_TOG_OK (1<<14) | ||
| #define CMASK_UIS_TOKEN (3<<12) | ||
| #define CMASK_UIS_ENDP (0xf<<8) | ||
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| #define CUIS_TOKEN_OUT 0x0 | ||
| #define CUIS_TOKEN_SOF 0x1 | ||
| #define CUIS_TOKEN_IN 0x2 | ||
| #define CUIS_TOKEN_SETUP 0x3 | ||
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| void USBFS_IRQHandler() | ||
| { | ||
| // Combined FG + ST flag. | ||
| uint16_t intfgst = *(uint16_t*)(&USBFSD->INT_FG); | ||
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| GPIOA->BSHR = 1; | ||
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| // TODO: Check if needs to be do-while to re-check. | ||
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| if( intfgst & CRB_UIF_TRANSFER ) | ||
| { | ||
| switch ( ( intfgst & CMASK_UIS_TOKEN) >> 12) | ||
| { | ||
| case CUIS_TOKEN_IN: | ||
| switch ( intst & ( USBFS_UIS_TOKEN_M | ||
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| /* while( ( flags = USBFS->INT_FG & 0x9f ) ) | ||
| { | ||
| if( flags & RB_UIF_TRANSFER ) | ||
| { | ||
| // Handle transfer. | ||
| USBDEBUG0++; | ||
| } | ||
| if( flags & RB_UIF_BUS_RST ) | ||
| { | ||
| // Handle transfer. | ||
| USBDEBUG0+=1000; | ||
| } | ||
| //USBDEBUG0 = USBFS->INT_FG; | ||
| USBFS->INT_FG = flags; | ||
| } | ||
| */ | ||
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| *(uint16_t*)(&USBFSD->INT_FG) = intfgst; | ||
| //intfgst = *(uint16_t*)(&USBFSD->INT_FG); | ||
| GPIOA->BSHR = 1<<16; | ||
| } | ||
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| void USBFS_Poll() | ||
| { | ||
| USBDEBUG2 = USBFS->INT_ST;//EP0_DATA[1]; | ||
| USBDEBUG1 = USBFS->MIS_ST; | ||
| } | ||
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| int FSUSBSetup() | ||
| { | ||
| RCC->APB2PCENR |= RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOC; | ||
| RCC->AHBPCENR |= RCC_USBFS; | ||
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| NVIC_EnableIRQ( USBFS_IRQn ); | ||
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| AFIO->CTLR |= USB_PHY_V33; | ||
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| USBFS->BASE_CTRL = RB_UC_RESET_SIE | RB_UC_CLR_ALL; | ||
| USBFS->BASE_CTRL = RB_UC_DEV_PU_EN | RB_UC_INT_BUSY | RB_UC_DMA_EN; | ||
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| // Enter device mode. | ||
| USBFS->INT_EN = RB_UIE_SUSPEND | RB_UIE_TRANSFER | RB_UIE_BUS_RST; | ||
| USBFS->UEP4_1_MOD = 0; | ||
| USBFS->UEP2_3_MOD = 0; | ||
| USBFS->UEP567_MOD = 0; | ||
| USBFS->UEP0_DMA = ((intptr_t)EP0_DATA) & 0x7fff; | ||
| USBFS->DEV_ADDR = 0x00; | ||
| USBFS->UDEV_CTRL = RB_UD_PD_DIS | RB_UD_PORT_EN; | ||
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| // Go on-bus. | ||
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| // From the TRM: | ||
| // | ||
| // USB multiplexing IO pins enable: | ||
| // | ||
| // Enabling USB requires, in addition to USB_IOEN set to | ||
| // 1, the setting of: MODE=0 in GPIO configuration register | ||
| // GPIOC_CFGXR corresponding to PC16 and PC17 to | ||
| // select the input mode. | ||
| // | ||
| // for USB device, CNF=10 corresponding to PC17 to select | ||
| // the input mode with up and down For USB devices, PC17 | ||
| // corresponding to CNF=10 selects the input mode with up | ||
| // and down pull, PC17 corresponding to bit 1 in | ||
| // GPIOC_OUTDR selects the up pull, and PC16 | ||
| // corresponding to CNF=01 selects the floating input. | ||
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| AFIO->CTLR = (AFIO->CTLR & ~(UDP_PUE_11 | UDM_PUE_11 )) | USB_PHY_V33 | USB_IOEN | UDP_PUE_11; //1.5k pullup | ||
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| // Enable PC16/17 Alternate Function (USB) | ||
| // According to EVT, GPIO16 = GPIO_Mode_IN_FLOATING, GPIO17 = GPIO_Mode_IPU | ||
| GPIOC->CFGXR &= ~(0xf<<(4*0)); | ||
| GPIOC->CFGXR |= (GPIO_CFGLR_IN_FLOAT)<<(4*0); // MSBs are CNF, LSBs are MODE | ||
| GPIOC->CFGXR &= ~(0xf<<(4*1)); | ||
| GPIOC->CFGXR |= (GPIO_CFGLR_IN_PUPD)<<(4*1); | ||
| GPIOC->BSXR = 1<<1; // PC17 on. | ||
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| USBFS->UDEV_CTRL = RB_UD_PORT_EN; | ||
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| // Go on-bus. | ||
| return 0; | ||
| } | ||
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