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-rw-r--r--prototype/fw/include/global.h4
-rw-r--r--prototype/fw/openocd.cfg5
-rw-r--r--prototype/fw/src/main.c43
-rw-r--r--prototype/fw/tools/patch_system_init.py2
m---------prototype/fw/upstream/PyCortexMDebug0
5 files changed, 51 insertions, 3 deletions
diff --git a/prototype/fw/include/global.h b/prototype/fw/include/global.h
index 138cbc9..d0c56d7 100644
--- a/prototype/fw/include/global.h
+++ b/prototype/fw/include/global.h
@@ -12,4 +12,8 @@
#include <generated/stm32_device.h>
+#define APB1_PRESC (1<<(APBPrescTable[(RCC->CFGR & RCC_CFGR_PPRE1_Msk) >> RCC_CFGR_PPRE1_Pos]))
+#define APB2_PRESC (1<<(APBPrescTable[(RCC->CFGR & RCC_CFGR_PPRE2_Msk) >> RCC_CFGR_PPRE2_Pos]))
+#define AHB_PRESC (1<<(AHBPrescTable[(RCC->CFGR & RCC_CFGR_HPRE_Msk) >> RCC_CFGR_HPRE_Pos]))
+
#endif /* __GLOBAL_H__ */
diff --git a/prototype/fw/openocd.cfg b/prototype/fw/openocd.cfg
index 5952538..51b3024 100644
--- a/prototype/fw/openocd.cfg
+++ b/prototype/fw/openocd.cfg
@@ -2,9 +2,10 @@ telnet_port 4444
gdb_port 3333
source [find interface/stlink-v2.cfg]
-#adapter_khz 10000
-
source [find target/stm32f3x_stlink.cfg]
+# Overwrite init handler since stm32f3x.cfg just stomps all over our adapter_khz setting
+stm32f3x.cpu configure -event reset-init { stm32f3x_default_reset_init; adapter_khz 1000 }
+
init
arm semihosting enable
diff --git a/prototype/fw/src/main.c b/prototype/fw/src/main.c
index a6b265b..de920eb 100644
--- a/prototype/fw/src/main.c
+++ b/prototype/fw/src/main.c
@@ -2,7 +2,50 @@
#include <global.h>
int main(void) {
+
+ RCC->AHBENR |= RCC_AHBENR_GPIOAEN;
+ RCC->APB2ENR |= RCC_APB2ENR_USART1EN;
+
+ GPIOA->MODER |= (2 << GPIO_MODER_MODER9_Pos);
+ GPIOA->AFR[1] = (7 << (9-8)*4);
+
+ SystemCoreClockUpdate();
+ int apb2_clock = SystemCoreClock / APB2_PRESC;
+
+ int baudrate = 115200;
+
+ USART1->CR1 = USART_CR1_MME | USART_CR1_TE;
+ USART1->BRR = (apb2_clock + baudrate/2) / baudrate;
+ USART1->CR1 |= USART_CR1_UE;
+
+ char s[12] = {
+ '0', '0', '0', '0', '0',
+ ' ', 'T', 'E', 'S', 'T',
+ '\n', '\0'};
+ int line = 0;
+ char *c = s;
+ USART1->TDR = *(c++); /* Kick off transmission */
while (23) {
+ if (USART1->ISR & USART_ISR_TXE) {
+ for (int i=0; i<100; i++)
+ asm volatile ("nop");
+ USART1->TDR = *(c++);
+ if (!*c) {
+ c = s;
+ line++;
+ int tmp = line;
+ tmp %= 100000;
+ s[0] = '0' + tmp/10000;
+ tmp %= 10000;
+ s[1] = '0' + tmp/1000;
+ tmp %= 1000;
+ s[2] = '0' + tmp/100;
+ tmp %= 100;
+ s[3] = '0' + tmp/10;
+ tmp %= 10;
+ s[4] = '0' + tmp;
+ }
+ }
}
}
diff --git a/prototype/fw/tools/patch_system_init.py b/prototype/fw/tools/patch_system_init.py
index 1c83f5e..a3e84f8 100644
--- a/prototype/fw/tools/patch_system_init.py
+++ b/prototype/fw/tools/patch_system_init.py
@@ -16,4 +16,4 @@ if __name__ == '__main__':
if line.strip().startswith('SCB->VTOR'):
print(' SCB->VTOR = (uint32_t)&g_pfnVectors;')
else:
- print(line)
+ print(line.rstrip())
diff --git a/prototype/fw/upstream/PyCortexMDebug b/prototype/fw/upstream/PyCortexMDebug
-Subproject 77e9717a0e7c5b44214bdf70fbddf376cf2e8a7
+Subproject 89c567b2847e1d3349b3bec64c3efa76f1ccf98